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Homework Help: Math: Trigonometry
Recent Homework Questions About Trigonometry
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trigo
what is the basic way to study this topic??i mean trigonometery......it's kinda difficult
Calculus
An airplane flies at an altitude of 5 miles toward a point directly over an observer. The speed of the plane is 600 mi/hr. Find the rate at which the angle of elevation is changing when the angle is 30 degrees. I found the answer to be 60 radians/hr by taking the derivative of...
trig
use sum or difference identities to find the exact value of the trigonometric function: tan 345 please show work, i cant figure out what im doing wrong!
Trigonometry
What's the easiest way to remember how to draw the graphs for the common trigonometric functions, like sin cos and tan?
Advanced Functions
Consider the trig equation: 4sinxcos2x + 4cosxsin2x - 1 = 0 in the Interval [0, 2 pi] Either show that there is no solution to the equation in this domain, or determine the smallest possible solution.
Pre Calculus
ok I appologize for my stupidity... I'll answer your question... ok instructions to this problem In problems 77-88, use properties of the trigonmetric functions to find the exact value of each expression. Do not use a calculator 85. sin(-pi/12)csc( (25 pi)/12 ) book dosen&...
algebra
A plane ascends at a 40° angle. When it reaches an altitude of one hundred feet, how much ground distance has it covered? To solve, use the trigonometric chart. Round the answer to the nearest tenth.
Pre Calc
use properties of the trigonometric function to find the exact value of each expression. Do no use a calculator. sec ( - pi/18) * cos (37 pi)/18 I do not see how to do this problem. Every time I do it out I get a reference angle of twenty degrees which isn't on the unit ci...
trigonometry
Perform Operations with Complex Number: Solve the equation. x^2+121=0
trigonometry
Complete the square to Solve Quadratic Equation: Solve the equation. Express the answer in simplest radical form. -x^2-7x=-11 Please Help!!!! Thanks.
trigonometry
Complete the square to Solve Quadratic Equation: Solve the equation. Express the answer in simplest radical form. -x^2-7x=-11 Please Help!!!! Thanks.
Trig
How do you do this problem? 1+i(square root of 3)
trig
how do you do sinAcosA=cosA-cos^3A/sinA
trig
when a vehicle is manufactured,its wheels are calibrated to rotate a specific number of times for given speeds with "standard" tires. Suppose a small pickup has standard tires with a radius of 14 inches. You decide to replace those tires with ones which have a radius...
Trig
If sin^2X=A what is an algebraic expression in A for cos(2X). I have no idea where to even begin with this!
Trig
From a point A on the ground, the angle of elevation to the top of a tall building is 24.1 degrees. From a point B, which is 600 ft closer to the building, the angle of elevation is measured to be 30.2 degrees. Find the height of the building. PLEASE HELP ME!
trig
This a problem I need help with. A vertical ple stands by a road that is inclined 10 degrees to the horizontal. When the angle of elevation of the sun is 23 degrees, the pole casts a shadow 38 ft long directly downhill along the road. How long is the pole?
Trig
I need help with these kind of problems. We are dealing with word problems and/or pictures that are solved by the Law of Sin or Cosine. If any one kows a wonderful web site that can help with these, I would greatly appreciate it. A parollelogram has side lengths 3 and 5, and o...
12th grade Trig
sec theta = 2, sin theta is less than 0. I'm not sure what to do? Please explain. Thank you.
Trigonometry
What is the cosecant of the arccot of 3?
Trigonometry
What is the arcsin of (pi/2)?
trig
How do I find the "exact value" for the arcsin of -pi/3 radians?
trigonometry
What is the exact value for sin5pi / 12 ?
math
When a pilot banks an aircraft moving at a speed, v, in metres per second, at an angle a, the radius of the turn that results is given by the formula: r = v^2/g * tan(pi/2 - a) where g is the accelatation due to gravity, or 9.8 m/s^2. Use an appropriate equivalent trigonometri...
Trigonometry
1.Using exact values, verify that cos 60°=1-2 sin² 30°
trig
find the remaining 5 trigometric functions of x cos x = 1/5, x in quadrant 1
trig
find sin s when cot s= -1/3, s in quadrant 4
Math.
8.)10/x + x = 7 15.) s= 4+15/3 --------- -4(1)+1 idontknow if you get the dotted line but its suppose to be like a stright line under thoose numbers.
Trig
Find the area of the triangle. b=125 c=162 <B=40 (b and c are the sides) (<B is the angle)
trig
Prove the following trig identity: 1 + sinx = sinx(1+cscx)
Trig
How come cosine of 225 degrees is a positive number i thought it was negative because it's reference angle would be 45 degrees below the second quadrant and in a unit circle cosine is just the x value so I thought cosine of something in both the second and third were negat...
Trig
A billboard rests on top of a base. From a point level with the bottom of the base, the angle of elevation of the bottom of the billboard is 26 degrees and the top of the billboard is 31 degrees. From a point 21 meters further away, the angle of elevation to the top of the bil...
Trig
Linear and angular speed Find w for each of the following: 1. the minute hand of a clock 2. the second hand of a clock The answer to #1 should be pi/30, but I do not understand how to solve these.
general science
If a graph shows time on the horizontal axis and speed on the vertical axis, a stright horizontal line across the graph would indicate?
trig
At the winter solstice, the power, in watts, received from the Sun on each square metre of Earth's surface can be modelled by the formula P = 1000sin (x + 113.5 degrees), where x represents the angle of latitude in the northern hemisphere. a) Determine the angle of latitud...
trigonometry
Use a compound angle formula for cosine to show that cos2x = cos^2x - sin^2x
trig
Use a compound angle formula for sine to show that sine2(theta) = 2sine(theta)cos(theta)
trig
Angle x is in the second quadrant and angle y is in the first quadrant such that sinx=5/13 and cosy=3/5. a) Determine an exact value for cosx b) Determine an exact value for siny
trig
Angle x is in the second quadrant and angle y is in the first quadrant such that sinx=5/13 and cosy=3/5. a) Determine an exact value for cosx b) Determine an exact value for siny
SQL for Business
By using this table: CREATE TABLE Part ( Partid int IDENTITY PRIMARY KEY, Supplierid int NOT NULL REFERENCES Part (PartID), Description VARCHAR (25) NOT NULL, Count int NOT NULL, Class VARCHAR (5) NOT NULL, Inspection smalldatetime NOT NULL); I need to write the following SQL ...
math
Given that sin pie/6 = 1/3, use an equivalent trigonometric expression to show that cos pie/3 = 1/2.
Physics
This is a very confusing question and I have no idea how to tackle it. - In a nuclear reactor, neutrons released by nuclear fission must be slowed down before they can trigger additional reactions in other nuclei. To see what sort of material is most effective in slowing (or m...
trig
Express each value as a trigonomic function of an angle in quadrant I: Cot(-660)
Pre-Calculus
Sales of ski equipment varies through the year from highs in January & December of $20 million, to a low in June of $2 million. Write a trigonometric function that describes this cycle. Calculate the expected sales for April. I think I got the first part: 9cos(pi/6) + 11 I am ...
Trig
Determine the quadrant in which each lies: sec0<0,cot0<0 sin0<0,tan0>0
Trig
I need help with these kind of problems! Can someone tell me how to work this problem out? Given tan0=2 square root of 5 over 4, and sin0<0. a. cos0 b. csc0 The 0 after tan, sin, cos, and csc stands for angle. The 0 after the < stands for negative or less than. I know it...
Trigonometry
State the amplitude of the following functions: a) y = cos theta b) y = 1/2cos theta c) y = -2cos theta
Math Trig
At what two points on the unit circle is the x-coordinate equal to the y-coordinate? Hint:Use the equation for the unit circle (x^2+y^2=1) but this time, replace y with x.
trig
lx - 2l - lx + 2l > x The absolute value of x - 2 minus the absolute value of x + 2 greater than x. What is the Answer Please Help!
Trigonometry
prove:(cscx-cotx)^4 x (cscx+cotx)^4 = 1
Calculus (trig stuff)
given a angle how do I find it's point P on the unit circle?
trig
sin theta/2cos theta/2=1/2 sine theta show the identiy and work
Trigonometry
The measure of one of the equal angles in an isoscles trinagle is twice the measure of the remaining angle. Determine the exact radian measures of the three angles in the triange
Trigonometry
How do you figure out the exact circular function value of sec(23pie/6)? *I don't know how to get the [pie]symbol on my keyboard
Calculus (trig stuff)
How do I do these type of problems find the exact value. Do not use a calculator cos 7pi
// calculus - trig derivatives
how do i do i do y=cos(radt)+ rad(cost)? ---- f(x) = (3x^2) (csc4x)^4 // f'(x)=? my notes say : f'(x) = (3x^2)5(csc4x)^4(-csc(4x)(tan4x)(4)+(csc4x)^5(6) I redid it and i got : f'(x) = (3x^2)5(csc4x)^4(-csc4x)(cot4x)(4) + (csc4x)^5(6x) which is correct? if it...
Trig
Verify the Identity (sin m +sin n)/ (cos m + cos n) = tan(m + n/2)
Trig
Your school is getting a 10,000 seat stadium to hold spectators for your home football and baseball games. For each row of seats, which rise like stairs, the dimensions are 30 inches wide and 12 inches deep. What is the pitch(angle) by which the rows of seats rise from the bot...
Trig
The state highway commission has decided to build a bridge over a dangerous railroad crossing. The approach ramp has to be constructed so that the bridge is 10 meters above the track. If the maximum desired grade of this ramp is 4 degrees, how far back from the edge of the bri...
Trigonometry
okay im still confused on how to do function notation. im not sure if im doing it right. The directions were:A:write an expression for f(x)B:find f(5) The problem was: y=x-2 My answers were: A:f(x)=x-2 B:f(5)=5-2 which came out as f(5)=3 Am i doing it right or anypart of it ri...
Trig
Find the exact circular function value for: sec(23pi/6) I know the answer should be: [2sqrt(3)]/3, but I do not understand how to solve the problem. I have a unit circle, but 23pi/6 is not on it, so I don't know how to find the (x,y)
trig
I need HELP Verify the identity Cot3X/CSCX=cosX(csc2X-1)
BIOLOGY
1.Three fatty acids form a triglyceride with one glycerol. What similarities would the fatty acids have with polysaccharides? What differences? 2. When you consume more food than you require, the mitochondria in the liver are involved n forming triglycerides from the excess. W...
trig
solve sin x-1=0 for 0degress<x<360 degrees
trig
how do you graph y=55-4csc(theta+5)???
Math
I have another question I am stuck on that follows a previous question. How do I get an equation for the height of the car on the ferris wheel over a 10 minute period if we start the analysis one minute into the ride. Can I still use the original formula h = -35cos(2pi*X/5)+37...
Math
Hi, this is a question I posted a couple of days ago and answers below.I am still really confused and unfortunately can't copy a picture into this. I thought it would be y-x but have no idea how to calculate that, but as the pistons move in towards each other, wouldn't...
Math - Trigonometry
Verify the following: 1. cos x/(1-sinx)= sec x + tan x 2. (tanx+1)^2=sec^2x + 2tan x 3. csc x = )cot x + tan x)/sec x 4. sin2x - cot x = -cotxcos2x
trig
Lindsay is out one night and notices that her body casts a shadow that is 1.8m long when she is standing 5mfrom the pole supporting a street light Lindsay is 1.5m tall. 1-what is the angle of elevation to the street light ? 2- how high is the street light
trig
Joe looks directly north and sees mount Thomas that has an elevation of 2300m above sea level the angle of elevation to mount Thomas from his point of observation is 22 degrees when Joe looks directly east from the same point of observation he sees mount cook the angle of elev...
trig
Joe looks directly north and sees mount Thomas that has an elevation of 2300m above sea level the angle of elevation to mount Thomas from his point of observation is 22 degrees when Joe looks directly east from the same point of observation he sees mount cook the angle of elev...
trig
Lindsay is out one night and notices that her body casts a shadow that is 1.8m long when she is standing 5mfrom the pole supporting a street light Lindsay is 1.5m tall. 1-what is the angle of elevation to the street light ? 2- how high is the street light
Maths
I have a trig question regarding a ferris wheel, radius 35m, axles 37m, clockwise direction, rotates twice every 10 mins. I have calculated the following function: h = -35cos(2pi*X/5)+37 I have calculated at what height I would be after 3 minutes by substituting X=3 in the abo...
trig
Point P is located at the intersection of a circle with a radius of r and the terminal side of an angle q. Find the coordinates of p to the nearest hundreth. q = -60° , r = 7
Algebra
plane ascends at a 40° angle. When it reaches an altitude of one hundred feet, how much ground distance has it covered? To solve, use the trigonometric chart. Round the answer to the nearest tenth.
FST (functions, stats, and trigonometry)
but what if the function is moved, then what is the line of symmetry? like (x,y)-> (x+3, y-1)? i understand where the line is visually but i don't know how to write the equation
FST (functions, stats, and trigonometry)
what is the equation for the axis of symmetry for the function f(x)=IxI?(absolute value)
Trigonometry
Help : To achieve similar weightlessness as NASA's centrifuge, ride the Gravitron at a carnival or fair. The Gravitron has a diameter of 14 meters and, in the first 20 seconds, it achieves zero gravity and the floor drops. Gravitron. If the gravitron rotates 18 times per m...
Trig
This problem is stumping me, can anyone help me? The Earth rotates every 24 hours (actually 23 hours, 56 minutes and 4 seconds) and has a diameter of 7926 miles. If you're standing on the equator, how fast are you traveling (how fast is the Earth spinning)? Compute this (a...
Trig
Need hellpp!! If a bicycle has 26 inch diameter wheels and the front “chain”drive has a radius of 2.1 inches and the back drive has a radius of 2.5 inches, how far does the bicycle travel for every one rotation of the cranks (pedals)? Carry out all calculations exact...
trig
I need help on these problems: Find the exact value of tan(23pi/6) also, Find the reference angle in radians and degrees for (34pi/18) please help walk me through these.
trig
csc(x)=3 and pi/2 less than (x) less than 3pi/2, find cot(x).
Trig
A line goes through points (2ã3,-3) and (8ã3,3). Find the equation of the line through these 2 points and the angle of incline (between the line and the x-axis).
Trig
A 30 degree central angle is in central position in a circle with a radius of 7 square roots of 5 (245). What are the coordinates of the point where the terminal ray intersects the cicrle?
UOP PSY 270
Respond to the following: 1.Stress can be the root cause of psychological disorders. Name four symptoms shared by acute and posttraumatic stress disorders. 2.What life events are most likely to trigger a stress disorder? 3.Traumatic events do not always result in a diagnosable...
Trigonometry
The number of daylight hours in a day is harmonic. Suppose that in a particular location, the shortest day of the year has 7 hours of daylight and the longest day of the year has 18 hours. Then, we can model its motion with the function N=Asin(Bt) + C where t is expressed in d...
health care
Is there really going ot be a fine for persons if the presidetn puts this reform through that everyone has to have insurence? This isn't homework but knew i would get a stright answer here.
algebra 2 trig
i need to find out how to solve this problem: 9x+2 7 ---------- + --- 3x^2-2x-8 3x^2+x-4
Trigonometry
Given that a^2+b^2=2 and that (a/b)= tan(45degee+x), find a and b in terms of sinx and cosx. I don't know what i'm supposed to do, and i dont come to an answer! Help, thanks! my workings: tan(45+x)= (1+tanx)/(1-tanx) a/b = (1+tanx)/(1-tanx) a(1-tanx)=b(1+tanx) i square...
Trigo
Given that a^2+b^2=2 and that (a/b)= tan(45degee+x), find a and b in terms of sinx and cosx. I don't know what i'm supposed to do, and i dont come to an answer! Help, thanks! my workings: tan(45+x)= (1+tanx)/(1-tanx) a/b = (1+tanx)/(1-tanx) a(1-tanx)=b(1+tanx) i square...
precal
can anyone help me with this question. Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trig functions of t, whenever possible. (a) -pi (b) 6pi
Physics
An object is shot at 20m/s at an angle theta. The object lands 24m away. What is the angle? Can you check if I am doing this right? I had v(initial) = 20 m/s g = 9.8 m/s^2 x = 24m 1st I solved for time: x = v(initial) t x = v(initial) cos(theta) t 24 = 20 cos(theta) t 24 / [20...
Math - Trig
I'm trying to verify these trigonometric identities. 1. 1 / [sec(x) * tan(x)] = csc(x) - sin(x) 2. csc(x) - sin(x) = cos(x) * cot(x) 3. 1/tan(x) + 1/cot(x) = tan(x) + cot(x) 4. csc(-x)/sec(-x) = -cot(x)
Pre Calc Trig Bit
Determine whether the given information resutls in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results. b = 4 c = 6 beta = 20 Ok... I checked my answers in the back of the book and got the first triangle right Gamma = 30.9 alpha = 129.1 a = 9...
Physics (Trig Bit)
A boy and a girl carry a 12.0 kg bucket of water by holding the ends of a rope with the bucket attached at the middle. FI tehre is an angle of 100.0 degrees between the two segments of the rope, what is the tension in each part? I do not understand the work Fw = mg = (12.0 kg)...
trig
I'm trying to see if the teacher didn't give us the right problem or if I'm just not getting it. The problem is "re-write the expression without a fraction: 4/(1-sin x)". I can do it if the problem is sin squared x but I don't know how to solve the pr...
Trigo help!
Ok, i've tried this question, and it brings me to no answers. Please help! Prove the following: secY(1+tanY)=6cosecY my workings: LeftHandSide: secY + tanY/cosY = 1/cosY + sinY/cos^2Y =(cosY+sinY)/cos^2Y = ??? How should i attempt this question?? Am i even on the right tra...
Trigo!
Ok, i've tried this sum a million times and i cant get an answer. Somebody please check my workings and tell me what i did wrong! Thanks! Given 4≤y≤6, find the value of y for which 2cos((2y)/3) + √3 = 0 Here's my workings: 2.666≤(2y/3)≤4 2...
Trigo!
Ok, i did this maths trigo question, that says sinx-cos=2/3. I squared it on both sides to get sin2x=5/9 and did the sum. In the end i got two solutions, 16.9 and 73.1. However, when i substituted the answers back into the equation, only one of the 2 answers was correct! The o...
Trig
Does anybody know a good website that will hlp me with finding the six trig functions of a point NOT on the unit cricle?
Trig
Help with solving radical fractions.
TRIG
please help two questions h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 2 9 6 7 1 5 7 also A surveillance satellite circles Earht at a height of h miles above the surface. Suppose that d is the distance, in miles, on the sruface of Earth that ...
trig please
I have no idea how to do this Find the value of the angle theta in degrees rounded to the neartest tenth of a degree. I have no idea were to start... h t t p : / / i m g 6 . i m a g e s h a c k . u s / i m g 6 / 5 8 9 9 / a d s f a s d f a s d f a d s f s a d f . j p g
Biology
hypoxia triggers increased ___ secretion? is it carbon monoxide? or erythropoietin? After oxygen diffuses into pulmonary capillaries, it diffuses into ___ and binds with __? a;interstitial fluid;RBC? b;interstitial fluid;C02? c;RBC:hemoglobin? d;RBC:C02?
Trig Picture
maybe i drew it wrong... h t t p : / / i 3 2 . t i n y p i c . c o m / i p m k o 5 . j p g the way my teacher taught me the angle of depression was the anlge that is made with a horizontal line or something like that i believed i drew it right oh and by the way this is the dia...
Trig
I have no idea how to do this problem From an airplane flying 2 kilometers aboce the ocean, a piolet sees two ships directly to the east. The angles of depression to the ships are 8 degrees 20 minutes and 75 degrees 40 minutes how far away are the ships? I know what the anlge ...
trig
Given that sin^2ceta/1-cos ceta -sin^2ceta/1+cosceta=1 where 0degress is less than or equal to ceta and less than or equal to 360 degress. find the value of ceta
Trig
Two observers 1 km apart spot an airplane. The angles of elevation of the airplane from the two observers are 22 degrees 50 minutes and 24 degrees 40 minutes. If the observers and the airplane are in the some vertical plnae, compute the altitude of the airplane. ok i don\'...
math algebre2 and trig
5>4b+9>17 - -
Math (Trigonometry)
Find csc B when a - 2 and b = 7 (A detailed answer would be really helpful)
trig
h t t p : / / i m g 4 0 . i m a g e s h a c k . u s / c o n t e n t . p h p ? p a g e = d o n e& l = i m g 4 0 / 1 4 8 / a s d a s d y e . j p g & v i a = m u p l o a d (def of tan theta = a^-1 o)a = o opposite = adjacent tan theta written with respect to the first angle oppos...
CRT 205- argument
Is this a correct evaluation of an argument, it's premise and conclusion? Thank you! The author states that “The disability rights movement has a long history of healthy skepticism toward medical professionals, and there's an established body of research demonstra...
CRT 205 - fallacies
Can you please identify the fallacies in this article? Are there any rhetorical devices in this article?: My name is Diane Coleman. I have a Juris Doctorate and Masters in Business Administration from the University of California at Los Angeles.... I am the Executive Director ...
CRT 205
Can you please identify the rhetorical devices in this article? Are there any rhetorical devices in this article?: My name is Diane Coleman. I have a Juris Doctorate and Masters in Business Administration from the University of California at Los Angeles.... I am the Executive ...
CRT 205
Are there any rhetorical devices in this article?: My name is Diane Coleman. I have a Juris Doctorate and Masters in Business Administration from the University of California at Los Angeles.... I am the Executive Director of Progress Center for Independent Living in Forest Par...
Trig Math
Solve the equation algebraically for x wohere 0 </ x< 2 pi. sin2 x = cos x
world history
Source-(The event which finally triggered war came on 28th June in Sarajevo, a town in the Austro-Hungarian Provence of Bosnia) How important was the assassinations of the Archduke Franz Ferdinand and his wife in causing the First World War? (5 marks)
Trig
Special Angles And their Measures Fill out the Table Below: in degrees Sin Cos Tan 0 30 45 60 90 120 135 150 180 210 225 240 270 300 315 330
algebra/trig
simplify using properties of exponents ? (2y^1/5)^4 ---------- y^3/10 what would that be please hlepp
trig
Find cos(a=b). sin a = 3/5, a lies in Quadrant II, and cos b = 5/13, b lies in Quadrant I.
Trig
h t t p : / / m a t h c e n t r a l . u r e g i n a . c a / Q Q / d a t a b a s e / Q Q . 0 9 . 9 9 / a n g e l a 2 . 2 . g i f give that picture how do I solve for (h) I know that you you From the diagram tan(3.5) = h/(13 + x) and tan(9) = h/x. Solve the second equation for x...
Trig Identities
If tan(theta)=7/13 and cos(theta)<0, what is the exact value of sin(theta)?
Trig....
use specific triangles and the unit circle to geth the values. tan(5pi/6?)
math
what is the ffive trigonometric function of sin =2/5 ?
Trigonometry
Need help on interval notations, need more of a definition and understanding, please help!
Trig Function Question
The y-intercept of the function g(x)=2sin2pi(x-1)+1 is what?
trig
hoW to evaluate these if cos=-12/13, A in Q II and cot B =5/12, B in Q III A) Sin^2 A (the sign ^ is power of)
Math Trig
As the time changes from 4:10 pm to 6:45 pm on the analog clock, determine the change in radian measure of the minute hand.
Trig problems
Part 1) Evaluate tan 7.5 Part 2) Evaluate exactly cos (-(45pi(4)))
Trigs
What is the value of 16^(cos (pi/3))?
Trig problem
What is a coterminal angle with 170 degrees?
Trigonometric Functions
A 2(pi) cm wire is stretched along a circle of radius 4cm. The degree measure of the central angle subtended by this wire arc is what?
Trigonometry
9x^4-24x^3+16x^2 (Find all solutions!)
Math
How do you figure out trigonometric functions that aren't on the unit circle? example: sin(-27pi/6)
Environmental Science
2 pages Details: Your comments to the editor of your favorite magazine intrigued her enough to call you and request that you write an editorial, for which, you note with a little surprise, you will be well-paid. She provides you with two topics which she feels would be of grea...
trig
ok I'm trying to solve for an angle knowing adjacent and opposite of a triangle so I do tangent by definition tan theta = a^-1 o how do I algebraically solve for theta
trig
how do you find the limits of : lim sinx/x where x->0 and lim 1/x-3 where x-> 3
trigeometry
what is the vertix and axis of symmetry of the graph of a quadrantic function
world history
1. The armistace of November 11, 1918, brought to an end almost four years of humans killing humans. It was great that the war was over. Many people had a difficult time adjusting though. What was post-WWI Canadian society like? Your answer should include the following: * life...
trig
how can i find all the exact solutions to the equation : 2cos^2x + 3sinx = 3 the solutions have to be between [0,2pi)
trig
I have to solve for side B of a right triangle. Side A is the square root of (25-x^2) and the hypotenuse is 5. when i do A^2 + B^2 = C^2 then at the end i end up with b^2 = -x^2 but the square root of a negative number is not possible so what am i doing wrong?
trig
how can you confirm the identity cos^4x = (1/8)(3+ 4cos2x+ cos4x) and sin4x = (4sinxcosx)(2cos^2x-1)
Math
Use the first five terms of the trigonometric series to find the value of sin pi/12 to four decimal places. a. 0.2618 b. 0.2588 c. 0.7071 d. 0.2648 I got B, is this right?
Physiology
the mechanisms responsible for triggering cardiac hypertrophy are still a mystery. Hypothesize about possible signals and the steps that might be involved to cause postprandial cardiac hypertrophy in pythons.
trigonometry
what direction of rotation generates and angle with a measure of -90 degrees? of 120 degrees? what portion of a complete rotation is -90 degrees? 120 degrees?
trig
I need to find all solutions of the given equations for the indicated interval. Round solutions to three decimal places if necessary. 1.) 3sin(x)+1=0, x within [0,2pi) 2.) 2sin(sq'd)(x)+cos(x)-1=0, x within R 3.) 4sin(sq'd)(x)-4sin(x)-1=0, x within R 4.) sin(x)+1=cos(x...
University math grade 11 Trig
A very tall light standard is swaying in an east-west direction in a strong wind. An observer notes that the time difference between the vertical position and the furthest point of sway was 2 seconds. The pole is 40 metres tall. At the furthest point of sway, the top of the po...
trigo help!
1. differentiate cos(3/x) 2. differentiate sin(4/x) 3. differentiate 3/{sin(3x+pi)} 4. differentiate pxsin(q/x)where p and q are constants. 5. differentiate xsin(a/x) where a is constant 6. differentiate sec^3(3x^2+1)
Math
Trig Identity Prove: cos(x+y)cos(x-y)=cos^2(x)+cos^2(y)-1
Math
Required to Prove the following trig identity: (cos2x)^2 + (sin2x)^2 = 1
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