Monday
September 22, 2014

Homework Help: Math: Trigonometry

Recent Homework Questions About Trigonometry

Post a New Question | Current Questions

Pr-Cal/Trig
1)if the graph of f(x)=cotx is transformed by a horizontal shrink of 1/4 and a horizontal shift left pi, the result is the graph of: a) g(x)= cot[1/4(x-pi)] b) g(x)=cot[1/4(x+pi)] c) g(x)=cot[4(x-pi)] d) g(x)=cot[4(x+pi)] e) g(x)=cot[4x+pi] please include how you got the answer
Monday, July 25, 2011 at 5:51pm

Trig
Find [4(cos115+isin115)]^6
Monday, July 25, 2011 at 3:27pm

pre calculus 2
use the fundamental trig. Identities to simplify tan^4x+2tan^2x+1
Sunday, July 24, 2011 at 9:18pm

math
mr. pursley, have you ever worked geo., trig. etcwith no calu.s with the heat on , when it had to be right?wheather you blew up your target or something else or the bld. collapsed or was built in the correct place? i'm not an answer grazer, but qam an answer seeker.I'm...
Friday, July 22, 2011 at 8:27pm

Trig: Conics
Sketch the graph and find following info: Vertex: Focus: Directrix: Axis of Symmetry: Ends of Latus Rectum: (x-2)^2=4(y-3) I think the vertex is (2,3) is this correct, and how do I proceed on? Thank you!
Wednesday, July 20, 2011 at 1:47pm

Trig
Find an equation for the hyperbola described. Foci at (-4,0) and (4,0); asymptote the line y= -x. Please explain the steps of this problem. My book does not get an example of this type of problem and I'm not having any luck working this problem.
Tuesday, July 19, 2011 at 11:08pm

Trig
A bridge is built in the shape of a parabolic arch. The bridge has a span of s= 160 feet and a maximum height of h= 25 feet. Choose a suitable rectangular coordinate system and find the height of the arch at distances of 10, 30, and 50 feet from the center. 10= 30= 50=
Monday, July 18, 2011 at 9:16am

trig
Find the exact value of the trigonometic function at the given real number of cot(5pi/3)
Sunday, July 17, 2011 at 10:22pm

Trig math
How do I solve for x? cos(4x)(2+tan^2x)=8
Thursday, July 14, 2011 at 5:56pm

trig
How do i solve Cos (4x)(2+tan^2X0 = 8?
Thursday, July 14, 2011 at 5:53pm

trig
Given that SIN Theta = -1/sqrt(10) and theta is in quadrant 4, find sin2theta and cos2theta. I'm not sure how to properly square the -1/sqrt10 and keep an exact answer other than decimal. Otherwise, my final answer is Sin2Theta = -.7255970691 and cos2theta = 1.632455533
Wednesday, July 13, 2011 at 4:10pm

trig
An airplane has an airspeed of 450 km/hr bearing N45E. The wind velocity is 30 km/hr in the direction N30W. What is the ground speed and what is its direction?. I have gotten this far: A= 450cos(45), 450sin(45) = (318.20, 318.20) W= 30cos(120), 30sin(120) = (-15, 25.98) A+W= ...
Wednesday, July 13, 2011 at 1:25pm

trig
Verify that each trigonometric equation is an identity tan^2+1/sec α =sec α
Wednesday, July 13, 2011 at 8:15am

trig
During a 12-hour period, the tides in one area of the Bay of Fundy cause the water level to rise to 6 m above average sea level and to fall 6 m below average sea level. The depth of the water at low tide is 2 m as measured against a pier. a.) Suppose the water is at average ...
Wednesday, July 13, 2011 at 12:18am

trig question...
During a 12-hour period, the tides in one area of the Bay of Fundy cause the water level to rise to 6 m above average sea level and to fall 6 m below average sea level. The depth of the water at low tide is 2 m as measured against a pier. a.) Suppose the water is at average ...
Tuesday, July 12, 2011 at 1:41pm

Math-trig.
1)sinx+cosx=1 2)sinx+cosx=1+sin2x
Friday, July 8, 2011 at 6:57am

trig
find cos (x/2) when sint =12/13
Thursday, July 7, 2011 at 11:11pm

trig
1=2pi times the square root of (L/9.8)
Wednesday, July 6, 2011 at 11:21pm

trig
sin^2(3 theta+5pie)+cos^2(3 theta+5pie)= ?
Wednesday, July 6, 2011 at 5:22pm

trig
N 5 22x2 1 76x 1 430 Use the equation to find N for each year in the table. (b) Discuss how well this equation approximates the data. (c) Rewrite the equation with the right side completely factored. (d) Use your equation from part (c) to find N for each year in the table. Do ...
Friday, July 1, 2011 at 9:15pm

trig
An airplane flying at 600 miles per hour has a bearing of 152 degrees. After flying for 1.5 hours, how far north and how far east will the plane have traveled from point of departure?
Thursday, June 30, 2011 at 9:09pm

trig
Evaluate the expression cos 22 degrees and sec 22 degrees
Thursday, June 30, 2011 at 11:25am

trig
A 115 foot foot casts a 147 foot shadow, what is the degree of elevation to the sun
Tuesday, June 28, 2011 at 10:23pm

trig
y=7sin20degrees/5
Monday, June 27, 2011 at 11:15pm

Trig
A plane is flying at 240 mph heading North 60 degrees East. The wind is blowing at South 30 degrees East at 30 mph. What is the largest and smallest angles?
Saturday, June 25, 2011 at 2:59pm

trig
sinx+sinxcot^2x=cscx prove each identity
Friday, June 24, 2011 at 11:02am

trig
tan(theta)-1= sin^2(theta)-cos^2(theta)/ sin(theta)cos(theta)+cos^2(theta) prove each identity
Friday, June 24, 2011 at 11:01am

Algebra/Trig
The members of a men’s club have a choice of wearing black or red vests to their club meetings. A study done over a period of many years determined that the percentage of black vests worn is 60%. If there are 10 men at a club meeting on a given night, what is the ...
Monday, June 20, 2011 at 6:18pm

trig
the angle in one regular polygon is to that in another as 3:2 and the number of the sides in first is twice that in second determine the the number of sides of 2 polygons
Sunday, June 19, 2011 at 3:10am

Trig
The graph of y = 7cosx + 24sinx would be a sinusoid if it were plotted. What would be the first positive value of x at which there is a high point?
Friday, June 17, 2011 at 1:15pm

trig
1. if sin 2A = Psin2B, prove that tan(A+B)/tan(A-B)=P+1/P-1.
Tuesday, June 14, 2011 at 5:17am

trig
Why are the quadrants situated and numbered the way they are.What is the purpose.
Monday, June 13, 2011 at 8:08pm

trig
how high is a tree that casts a 30 ft shadow at the same time a 10 ft pole casts a shadow which is 10 ft long?
Sunday, June 12, 2011 at 10:53pm

Trig
Find the amplitude, period, and phase shift of the following function: y=-2cos2(θ+45)
Saturday, June 11, 2011 at 3:58pm

Trig
URGENT, Please answer this question: give the value of: Tan(Arctan x+1/x-1+Arctan x-1/x)
Saturday, June 11, 2011 at 10:21am

trig
if alpha and beta are 2 different values of θ lying between 0 and 2π which satisfy the equation 6cosθ+8 sinθ=9 find the value of sin alpha + beta
Saturday, June 11, 2011 at 6:54am

TRIG..............
Q.1 Prove the following identities:- (i) tan^3x/1+tan^2x + cot^3x/1+cot^2 = 1-2sin^x cos^x/sinx cosx (ii) (1+cotx+tanx)(sinx-cosx)/sec^3x-cosec^3x​ = sin^2xcos^2x.
Friday, June 10, 2011 at 7:18am

Trig
give the value of tan(arctan x+1/x-1+arctanx-1/x)
Thursday, June 9, 2011 at 9:58pm

aleg/trig
two forces of 14and 30 act on a body forming an obtuse angle w/ eachother. if the resultant is 60, whats the angle betweeen the 2 forces?
Thursday, June 9, 2011 at 9:15pm

alegbra/trig
x^2+2x-15=0 solve by completing the square
Thursday, June 9, 2011 at 9:13pm

Math - Trig
Let Vector V(t) = 2pi t î + 2pi t ĵ. Find the vector V(1/3). Where is the vector after the next 1/3s? What is the angular speed?
Thursday, June 9, 2011 at 2:33am

algebra/trig
1.Find the domain f(x)=ã(x^(2)-9) 2. Find all six trig functions for (-3,4)
Wednesday, June 8, 2011 at 11:27pm

trig
I get that we have to put it into radical form, but I don't understand the process. Can someone walk me through it and explain it? arccos(-1/2)
Tuesday, June 7, 2011 at 4:26pm

trig
FInd the exact value pf the 6 trig function of alpha Given: point (-2,-6) on the terminal side of the angle in standard position sin alpha cos alpha tan alpha sec alpha csc alpha cot alpha
Tuesday, June 7, 2011 at 10:26am

Trig
Evaluate (if possible) the sine,cosine, and tangent of the angle 10pi/3
Monday, June 6, 2011 at 4:58pm

Trig
Find (if possible) the trig function of the quadrant angle. sec 3pi/2
Monday, June 6, 2011 at 4:00pm

Trig
Find (if possible) the trig function of the quadrant angle.
Monday, June 6, 2011 at 3:59pm

algrebra 2 / trig
solve the triangle a=1 b=2 C=50 degrees
Monday, June 6, 2011 at 3:46pm

trig
How can I get rid of the square roots in this fraction? sqrt((2-sqrt3))/sqrt((2+sqrt3)) the answer is 2-sqrt3 but I don't know how they arrive at it.
Sunday, June 5, 2011 at 9:39pm

trig
please help. show step by step how to solve h(x)=2 cot(x/2) Identify period identify x-intercepts identify asymptotes
Sunday, June 5, 2011 at 9:04pm

trig
on the same set of axes: (0 degrees is greater than or equal to x and x is less than or equal to 360 degrees) (a) sketch the graphs of y= sin degrees ,y=2sinx degrees and y=sin2x degrees
Saturday, June 4, 2011 at 10:45pm

trig
Given Tangent theta = -5 on 4 and cos theta >0, find sine theta and sec theta
Saturday, June 4, 2011 at 10:39pm

Trig
Find all solutions of the equation on the interval [0,2pi): Tan^2x=1-secx
Thursday, June 2, 2011 at 9:41pm

Trig
Find all solutions of equation on interval [0,2pi] 1=cot^2x + cscx
Thursday, June 2, 2011 at 7:58pm

trig
1-cosA+cosB-cos(A+B)/1+cosA-cosB-cos(A+B​)=tan(A/2)ct(A/2)
Thursday, June 2, 2011 at 12:23am

trig
2cos^2+sin=1
Wednesday, June 1, 2011 at 6:47pm

Algebra 2/ trig
sin theta= 7/25, 0< theta < pi/2 cos beta=8/17, 0, beta, pi/2 Find(theta+ beta)
Wednesday, June 1, 2011 at 6:28pm

trig
find an angle between 0 and & 2 pi that is coterminal with - 11 over 24 pi
Tuesday, May 31, 2011 at 11:32pm

Trig
How do I prove the following Identity? sec x(sec x-cos x)=tan^2x If there is a certain website or suggestion to help with these type of equations I would greatly appreciate it. I've been studying these for a while but still get pretty confused.
Tuesday, May 31, 2011 at 9:20pm

trig
Simplify: cos x cos x ----- + ----- sec x-1 sec x+1
Tuesday, May 31, 2011 at 8:01pm

trig
verifying a solution. 4cos^2 2x-2=0
Tuesday, May 31, 2011 at 7:43pm

trig
how much force is necessary to stop a 2500 pound car from rolling down a 40degree slope
Monday, May 30, 2011 at 9:17pm

trig
If cos(t)=(-7/8) where pi<t<(3pi/2), find the values of the following trig functions. cos(2t)=? sin(2t)=? cos(t/2)=? sin(t/2)=?
Monday, May 30, 2011 at 8:33pm

trig
prove as an identity 1/1+sin(x) + 1/1-sin(x)
Monday, May 30, 2011 at 8:33pm

trig
Ok, so im brand new at trigonometry. If i have a right triangle with an acute angle of 30° an opposite side of 4 and a hypotenuse of x how do ii find x
Monday, May 30, 2011 at 7:55pm

trig
y = sin (3x-2pi)
Monday, May 30, 2011 at 3:18pm

trig
sec(90degrees -theta)
Friday, May 27, 2011 at 10:14pm

trig
find the exact zeros of the function in the interval [0, 2π) 2 cot squared x + 3 csc x=0
Friday, May 27, 2011 at 3:37pm

pre cal\trig
Find the following cot(Arccsc 25/24) show your work
Thursday, May 26, 2011 at 5:17pm

trig
A plane is flying 225 mph heading South 25°West. The wind is blowing South 80°East at 60 mph. What is the bearing of the plane? What is the smallest angle of the triangle? What is the largest angle of the triangle? What is the remaining angle of the triangle? What is ...
Thursday, May 26, 2011 at 10:28am

trig
if x and y are positive acute angles, tan x=1/3and tan y =1/4, find the value of sin(x-y)
Wednesday, May 25, 2011 at 12:22pm

trig
A 2000 pound car is parked on a street that makes an angle of 12* with the horizontal (think it's a street on a hill). a) find the magnitude of the force required to keep the car from rolling down the hill. b) Find the force perpendicular to the street.
Wednesday, May 25, 2011 at 11:24am

trig
An aifplane is flying on a compass heading (bearing) of 170* at 460 mph. A wind is blowing with the bearing 200* at 80mph. a) Find the component form of the velocity of the airplane. b) Find the actual ground speed and direction of the airplane.
Wednesday, May 25, 2011 at 10:58am

trig
A plane is is flying 240 mph heading N60°E. The wind is blowing S30°E at 30 mph. What is ground speed? What is the smallest angle in the triangle? What is the biggest angle in the triangle? What is the remaining angle in the triangle? What is the bearing of the plane?
Wednesday, May 25, 2011 at 8:21am

trig
Find the solutions to the equation cos2x=sinx and 2cos^2x-3cosx-3=0
Tuesday, May 24, 2011 at 9:47pm

Trig
How to find all solutions for 3tan^22x-1=0?
Tuesday, May 24, 2011 at 5:35pm

Trig
find cos x/2, sin x = 1/4, 360 < x < 450, use half-angle identity
Monday, May 23, 2011 at 10:28pm

trig
find the least positive value of @. sec (4@+10)cos(3@+17) @=theta
Monday, May 23, 2011 at 9:43am

trig
In Rights Triangle ABC with C=90 degrees if a=4 and c=2square roots of 7, find SinA
Sunday, May 22, 2011 at 10:18pm

trig
In Rights Triangle ABC with C=90 degrees if a=4 and c=2square roots of 7, find SinA
Sunday, May 22, 2011 at 10:17pm

trig
How do I name the quadrand in which angle thada may lie if sec thada > 0 and tan thada > 0?
Sunday, May 22, 2011 at 5:37pm

Trig
How do I find the quadrant in which angle thada may lie if cos thada > 0 and tan thada < 0?
Sunday, May 22, 2011 at 5:35pm

Trig
cos4x*cos3x + sin4x*sin3x
Sunday, May 22, 2011 at 2:30pm

Trig
A boat heads S 15 degrees E on a river that flows due west. the boat travels S 11 degrees W with a speed of 25 km per hour. Find the speed of the current and the speed of the still water. This is due tomorrow.
Sunday, May 22, 2011 at 1:05am

trig
In triangle XYZ, angle X = 90°, angle Y = 38°, and z = 4'5". Find y
Friday, May 20, 2011 at 12:42pm

Trig
A tree is growing at an angle out of the ground, 15°17' from vertical. Standing 10 feet away from the base, the angle to the top of the tree is 25°17'. What is the length of the tree?
Friday, May 20, 2011 at 10:51am

trig
if A+B=45 degree show that (cos A-1)(cotB-1)=2.
Thursday, May 19, 2011 at 2:31pm

trig
Find the angle between 0 and 2pi that is coterminal with negative one half pi; expressing the answer in radians in terms of pi.
Thursday, May 19, 2011 at 1:37pm

Trig/Pre-Calc
The demand equation for a microwave oven is given by: p=500-0.5(e^0.004x) Find the demand x for a price of (a) p=$600 and (b) p=$300 Any help would be greatly appreciated.
Tuesday, May 17, 2011 at 10:57pm

trig
csc^2x secx/sec^2x+csc^2x
Tuesday, May 17, 2011 at 9:02pm

Trig/Pre-Calc
$2500 is invested in an account at interest rate r, compounded continuously. Find the time required for the amount to (a) double and (b) triple. r=0.085 I know you use the formula A=Pe^rt and you would start by setting it up as follows: A=(2500)e^(0.085)(t) I'm not sure ...
Tuesday, May 17, 2011 at 8:15pm

trig
Use a graph of the cosecant function to find the value of theta for which csc theta equals 1.
Tuesday, May 17, 2011 at 9:20am

Trig/Pre-Calc
Could someone please help me on this problem. I'm really confused, and this assignment is due tomorrow. Solve the logarithmic equation algebraically. Approximate the result to three decimal places. log4x-log4(x-1)=1/2 To start off the equation, I know you would do the ...
Monday, May 16, 2011 at 7:01pm

Trig/Pre-Calc
Need help with current Trig problem for tomorrow: Solve the logarithmic equation algebraically. Approximate the result to three decimal places. 6log3(0.5x)=11 I know to start off the equation you divide by 6. I know the answer is 14.988. I just am puzzled on how to receive the...
Monday, May 16, 2011 at 6:18pm

trig
How do you solve csc2x + 1 = 0
Monday, May 16, 2011 at 5:12pm

trig
Find the exact value of Cos(sin-1ã(3/2))
Monday, May 16, 2011 at 10:31am

trig
Given that sin (pi/10)=(sqrt(5)-1)/4, use double-angle formulas to find an exact expression for sin(pi/5).
Monday, May 16, 2011 at 1:56am

trig
what are the values of theta in the interval 0 degrees is lessthan or equal to theta is less than or equal to 360 degrees that satisfy the equation tan theta minus square root of 3 equals 0?
Sunday, May 15, 2011 at 11:02pm

Trig Identities..
Solve any way possibly? Thank you! 1-sin^2x/1-cosx
Sunday, May 15, 2011 at 10:55pm

Trig
A ramp 38' long rises to a platform. The bottom of the platform is 20' from the foot of the ramp. Find x , the angle of elevation of the ramp. Round your answer to the nearest hundredth of a degree. After this question I'm done with TRIG!!! Thanks
Sunday, May 15, 2011 at 8:11pm

Pages: <<Prev | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | Next>>

Post a New Question | Current Questions

Homework Help: Math

Search
Members