Tuesday
September 23, 2014

# Homework Help: Math: Trigonometry

Recent Homework Questions About Trigonometry

trigonometry
simplify sin7x-sin3x as a product of trig functions.
Tuesday, April 19, 2011 at 8:16pm

trig
convert the point with polar coordinates (2,7pi/6) into rectangular coordinates.
Tuesday, April 19, 2011 at 8:13pm

trig
The parametric equations for a curve in the x-y plane are x=2+t^2 and y=4-3t. Determine the points where the curve intersects the x-axis.
Tuesday, April 19, 2011 at 8:12pm

trig
simplify the expression: sin(theta+pi/4) + sin(theta-pi/4)
Tuesday, April 19, 2011 at 8:08pm

trig
angle x lies in quadrant 3 and cos(x)=-.6. Find cos(3pi/2-x)
Tuesday, April 19, 2011 at 1:33pm

trig
simplify the expression sin(theta+pi/4) + sin(theta-pi/4)
Monday, April 18, 2011 at 10:15pm

Algebra2/ Trig
During a baseball season, a company pledges a donation to a charity of $5000 plus$100 for every home run hit by the local team. Does it make more sense to represent this situation using a sequence or a series? Explain your reasoning.
Monday, April 18, 2011 at 2:20pm

trig
what is the cube root of (-64i)?
Sunday, April 17, 2011 at 5:54pm

trig
What is the trigonometric notation for 3-3(sqrt3i)?
Sunday, April 17, 2011 at 1:14pm

trig
Multiply: 5(cos Pi/3 + i sin Pi/3)times 2 (cos Pi/4 + i sin Pi/4) and leave the answer in trigonometric notation.
Sunday, April 17, 2011 at 12:56pm

Pre-Calc/Trig
1. Find all possible values of k so that (3,5), (5,-1), and (k,8) are the vertices of a right triangle 2. Find all points with -x+2y=0 so that (x,y) is 5 units from (-1,4) 3. (f(x+h)-f(x))/h for f(x)= -5/(x+2) 4. The frequency of the sound produced by a string is directly ...
Sunday, April 17, 2011 at 1:54am

trig
Peter (P) and Jamie(J) have computer factories that are 132 miles apart. They both ship their completed parts to Diane (D). Diane is 72 miles from Peter and 84 miles from Jamie. Using the points D,J,and P to form a triangle, find m<PDJ to the nearest tenth of a degree.
Saturday, April 16, 2011 at 5:39pm

trig
Graph this trigonometric function. y=-4cos(x/2+3.14)+1
Friday, April 15, 2011 at 8:47pm

trig
A rocket tracking station has two telescopes A and B placed 1.9 miles apart. The telescopes lock onto a rocket and transmit their anlges of elevation to a computer after a rocket launch. what is the distance to the rocket
Thursday, April 14, 2011 at 6:13pm

trig
A rocket tracking station has two telescopes A and B placed 1.9 miles apart. The telescopes lock onto a rocket and transmit their anlges of elevation to a computer after a rocket launch. what is the distance to the rocket
Thursday, April 14, 2011 at 6:08pm

trig
Show that (90-45)=cos90 cos 45
Thursday, April 14, 2011 at 2:04pm

alagbra 2 trig
solve the equation 2ln(x+5)-1=7
Wednesday, April 13, 2011 at 5:17pm

trig
2cos(theda)-"2=0
Sunday, April 10, 2011 at 10:37pm

trig
3sin(2x)-2cos(x)=0
Sunday, April 10, 2011 at 10:46am

trig
express in terms of ¦Ð, the interval for which 4cosx ¡Ý 2
Saturday, April 9, 2011 at 7:57pm

trig
4cos(2x)+2cos(x)+3=0
Saturday, April 9, 2011 at 11:04am

trig
find the period and amplitude of each sine function.then sketch each function from 0 to 2pi: 1)y=-3.5 sin 5theta
Thursday, April 7, 2011 at 8:22pm

trig
If an equilateral triangle has a side of 10 ft what is its altitude to two significant digits
Wednesday, April 6, 2011 at 9:35pm

trig
Match each ratio in the first row with an equivalent ratio from the second row if angle A plus angle B = 90 degrees. SinA CosA TanA CscA SecA CotA SinB CosB TanB CscB SecB CotB Does this question even make sense?
Wednesday, April 6, 2011 at 6:49pm

Trig
A 60 ft. antenna stands on top of a building, From a point on the ground, the angles of elevation to the top and bottom of the antenna measure 58 and 44 respectively. How tall is the building
Tuesday, April 5, 2011 at 6:58pm

Pre-calc/Trig
If cot(a)=3 and sin(b)= (15/17) where a being alpha lies in quadrant 3 and b being beta lies in quadrant 2, what is the exact value of sin(2a)
Tuesday, April 5, 2011 at 4:53pm

trig
2 cosine squared pi over 8 minus 1 find exact value of given expression
Monday, April 4, 2011 at 8:31pm

trig maths
rewrite 7 sin2A – 5 sin A + cos2A = o to solve for A
Monday, April 4, 2011 at 7:51am

trig
If a triangle has an area of 50 square units and has angles that measure 15, 65, and 100 degress, find the length of the shortest side to the nearest tenth. Do not round till the final answer.
Sunday, April 3, 2011 at 8:13pm

trig
If a triangle has an area of 50 square units and has angles that measure 15, 65, and 100 degress, find the length of the shortest side to the nearest tenth. Do not round till the final answer.
Sunday, April 3, 2011 at 8:12pm

Trig
What is the exact value of sin^-1(sin(8pi/15)?
Wednesday, March 30, 2011 at 9:07pm

use an inverse trig function to write theta as a function of x (There is a right triangle drawn. The hypotenuse is 2. Theta is the angle between the base and the hypotenuse. The base/adjacent side of theta is labeled(x + 1) The side opposite theta does not have a value.) Use ...
Wednesday, March 30, 2011 at 8:25pm

trig
secx=5 use a graph to solve the following equation in the interval x is greater than -pie but less than pie
Wednesday, March 30, 2011 at 7:06pm

trig
I have to retype this. For which angles theta, with 0 degrees less than/equal to theta less than/equal to 180 degrees, is sin 3theta = (equal) -1 (negative 1)? a) 30 and 150 degrees b) 60 and 120 degrees c) 90 degrees d) 0 and 120 degrees How do I set this up?
Wednesday, March 30, 2011 at 6:16pm

trig
use an inverse trig function to write è as a function of x (There is a right triangle. The hypotenuse is 2. è is the angle between the base and the hypotenuse. The base/adjacent side of è is (x + 1) The side opposite è does not have a value.) a) &...
Wednesday, March 30, 2011 at 6:12pm

Trig
A Person is riding a bike with wheels that have a 14 inch radius at 15 mph. The bicyclist rides over some gum which sticks in the tire, assume this is t=0. 1. Find a function that gives the height in inches above the ground of the gum, with input is second
Wednesday, March 30, 2011 at 6:07pm

trig
For which angles ¦È, with 0¡ã ¡Ü ¦È ¡Ü 180¡ã, is sin 3¦È = -1? How do I set this up?
Wednesday, March 30, 2011 at 5:53pm

trig
solve csc^2x=3 for all possible solutions
Tuesday, March 29, 2011 at 11:21pm

trig
Use the appropriate cofunction to find an equivalent expression for cos 54° cot 24 sec 32 sin 36 csc 44
Tuesday, March 29, 2011 at 9:23pm

trig
A passenger airplane flying at an altitude of 1.8 km starts its final airport approach by descending at an angle of depression of 6°. How far along the ground is the airplane from its landing point
Tuesday, March 29, 2011 at 9:20pm

trig
Given a right triangle with legs 8 and 5, find the measure of the two acute angles. (Round to the nearest hundredth
Tuesday, March 29, 2011 at 9:19pm

Pre Calc Trig
Verify the following: tan( a + p/2) = -cot a a= alpha and p= pie since I do not have that button.
Tuesday, March 29, 2011 at 1:16pm

trig
y=1/4 cos (2/3 x +3 pi )
Monday, March 28, 2011 at 9:02pm

trig
In a circle of radius 12 inches, a sector is formed by a central angle of pie/4 radians. Find the area of teh sector to the nearest hundredth of a square inch.
Monday, March 28, 2011 at 2:23pm

trig
y = 3sec3x Amplitude =_________ Period = __________ Shift along x = ____________ Shift along y = _____________ Kind of reflection = ______________
Saturday, March 26, 2011 at 9:22pm

trig
ABC is an isoscele triangle in which [AB]=[AC]=5cm and [BC]=6cm. Calculate [AM], where M is the mid-point of BC.
Saturday, March 26, 2011 at 7:22pm

Trigonometry
Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then x=f^-1(y). Explain your answer. True or False: For ...
Thursday, March 24, 2011 at 3:03pm

Trigonometry
Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then x=f^-1(y). Explain your answer. True or False: For ...
Thursday, March 24, 2011 at 2:46pm

Trig
Solve: (2/y+2)+(3/y)=(-y/y+2)
Tuesday, March 22, 2011 at 11:51pm

Trig
(2/y+2)+(3/y)=(-y/y+2)
Tuesday, March 22, 2011 at 10:15pm

trig
Evaluate each value as a trigonometric function of an angle in Quadrant 1. #1 cos (27pi/8)
Tuesday, March 22, 2011 at 7:30pm

trig
Prove that sin squared 20 degrees+sin squared 40 degrees+ sin squared 80 degrees is equal to 3/2
Tuesday, March 22, 2011 at 3:18pm

trig
Rewrite as a function of a quadrant 1 angle. cos152
Tuesday, March 22, 2011 at 9:42am

trig, Phoenix College
Where did the number 0.5736 come from or originated from? Will the horizon be closer or farther away when your eyes are closer to the surface? Will the horizon be closer or farther away when your eyes are farther from the surface?
Monday, March 21, 2011 at 10:59pm

math - trig
Given the coordinates of the terminal side of an angle in standard position, find the value of sine, cosine, and tangent: (-4,0)
Monday, March 21, 2011 at 10:10pm

verfying trig identity
1+Cosx 1-Cosx _______ - _______ = 4CotxCscx 1-cosx 1+Cosx
Monday, March 21, 2011 at 7:01pm

trig
determine wheather each of the following is an identity or not prove it 1. cos^2a+sec^2a=2+sina 2. cot^2a+cosa=sin^2a
Sunday, March 20, 2011 at 11:46am

trig
if sina,cosa,tana are in geometric progression then prove that cot^6a-cot^2a=1
Sunday, March 20, 2011 at 11:40am

trig
For each expression in column I, choose the expression from column II to complete an identity: Column I Column II 1. -tanxcosx A. sin^2x/cos^2x 2. sec^2x-1 B. 1/sec^2x 3. sec x/cscx C. sin(-x) 4. 1+sin^2x D.csc^2x-cot^2x+sin^2x 5. cos^2 x E. tanx I figured #1 is C, #2 is A, ...
Saturday, March 19, 2011 at 9:52pm

trig
draw the graph of 4sin(x+30) and 2+tanx for values of x from 0 degree to 360degree and obtain the solution within the range of the equation 4sin(x+30)-tan x=2
Saturday, March 19, 2011 at 5:38pm

trig
{Given: cos(A)=\frac: sqrt{203}/{18} {Find: tan(A) Find the positive value of the above in simplest radical form.
Saturday, March 19, 2011 at 2:54pm

trig
The number of a fraction is three more than twice the denominator. The fraction simplified is equal to 9/4 Find the fraction
Wednesday, March 16, 2011 at 10:37pm

trig
Bob throws a ball straight up with an initial speed of 50 feet per second from a height of 6 feet. (a) Find parametric equations that describe the motion of the ball as a function of time. (Do this on paper. Your instructor may ask you to turn in this work.) (b) How long is ...
Tuesday, March 15, 2011 at 9:02pm

trig
1/4tan(2x)
Tuesday, March 15, 2011 at 5:18pm

Math Trig
Find all solutions on the interval [0,2pi] for the following: 2sin^2(x)-5sin(x)=-3 cos^2(x)+sin(x)=1
Monday, March 14, 2011 at 7:00pm

Trig
Finding all Solutions for 2cos(x)-ã3=0
Monday, March 14, 2011 at 6:38pm

Trig
sin^2x/sec^2x-1
Monday, March 14, 2011 at 6:37pm

Trig
Find all values of theta in the interval 0 <= theta < 360 that satisfy the equation 3cos(2theta)=7cos(theta). Express answers to the nearest ten minutes.
Monday, March 14, 2011 at 6:30pm

trig
prove that (sin^4x-cos^4x)/(sinx-cosx) = sinx+cosx
Saturday, March 12, 2011 at 9:00am

Trig
If the terminal side of theta in standard position contains the point (5,8). Find the exact value of tan of theta
Thursday, March 10, 2011 at 8:36pm

Trig
Given that theta is a quadrant 3 angle with cos of theta=-7radical65/65, determine tan of theta
Thursday, March 10, 2011 at 8:21pm

trig
if cot of theta is less than zero, and csc of theta is less than zero what quadrant is theta in?
Thursday, March 10, 2011 at 8:06pm

trig
if sin of theta is less than zero and cos of theta is greater than zero what quadrant is theta in?
Thursday, March 10, 2011 at 8:06pm

trig
if csc of theta is greater than zero and sec of theta is less than zero what quadrant is theta in?
Thursday, March 10, 2011 at 8:05pm

trig
if than of theta is greater than zero and cos of theta is greater than zero what quadrant is theta in?
Thursday, March 10, 2011 at 8:03pm

Algebra and Trig
Aldo has feet of fencing. He will use it to form three sides of a rectangular garden. The fourth side will be along a house and will not need fencing. What is the maximum area that the garden can have?
Thursday, March 10, 2011 at 1:16pm

trig
solve each equation for 0 less than or equal to x greater than 2ð. cot²x-cscx=1 thanks:) step by step please :)
Wednesday, March 9, 2011 at 9:04pm

Math (Trig.)
A boat sailing from A to B travels in a straight line until the captain realizes he is off course. The boat is turned through an angle of 60 degrees, then travels another 10 km to B. The trip would have been 4 km shorter if the boat had gone straight from A to B. How far did ...
Wednesday, March 9, 2011 at 7:47pm

Trigonometry
I have some trigonometric equations to do, but I'm pretty lost, and I have to get them done in a timely fashion, so any help would be much appreciated. "Solve the following trig equations. Give all the positive values of the angle between 0 degrees and 360 degrees ...
Wednesday, March 9, 2011 at 3:38pm

trig
I need to state the period and 2 consecutive asymptotes on the graph for the following questions. 1: y = -3 tan pi*x period: pi (?) asymptotes: ? 2: y = 2 sec 4x period: ? asymptotes: ? 3: y = csc (x/3) period: ? asymptotes: ? 4: y = 3 cot (pi*x/2) period: ? asymptotes: ? If ...
Wednesday, March 9, 2011 at 9:28am

trig
A surveillance satellite circles the earth at a hight of h miles above the surface. Suppose that d is the distance, in miles, on the surface of the earth that can be observed from the satellite. find an equation that relates to central angel (theta) to the hight h.
Tuesday, March 8, 2011 at 11:23am

Trig
What is the phase shift of y=6cos(6x+pi/2)?
Monday, March 7, 2011 at 11:24am

trig
tanx sin^2x capital sigma [0,2p]
Sunday, March 6, 2011 at 10:34pm

trig
give and exact value for cos(2pi/3)
Sunday, March 6, 2011 at 9:41pm

Trig
If = 58° and m = 120 in, what is the value of n to the nearest tenth of an inch?
Sunday, March 6, 2011 at 9:30pm

trig
with its arm fully extended to a length of 16ft, the maximum height that a man lift can reach is 18ft. The lowest height is 4ft, what is the position where the arm of the lift is horizontal. a) if a man gets on the lift and the arm is lifted through an angle 15degrees,what ...
Sunday, March 6, 2011 at 5:49pm

trig
if theta is an angle in standard position and B(-3,4) is a point on the terminal side of the angle, what is the value of sin theta?
Sunday, March 6, 2011 at 12:13pm

trig
Suppose the tangent of an acute angle in a right triangle is less than 1. How does the side opposite the angle compare to the side adjacent to the angle?
Saturday, March 5, 2011 at 6:07pm

trig
using the given point (9, squareroot 19) find the value of cosx
Friday, March 4, 2011 at 11:39am

Trigonometry
Solve the following trig equations. Give all positive values of the angle between 0 degrees and 360 degrees that will satisfy each. Give any approximate value to the nearest minute only. 3 sin è - 4 cos è = 2 Can you please help me with this one.
Thursday, March 3, 2011 at 11:14pm

Geometry/trig
How do I find the geometric mean between 12 and 2.4?
Thursday, March 3, 2011 at 10:56pm

Trigonometry
use the appropriate trig identity (sum and difference, half angle, double angle) to find the exact value. 1)cos 255 degrees 2) sin 165 degrees 3) tan 285 degrees
Thursday, March 3, 2011 at 7:55pm

trigonometry (please double check this)
Solve the following trig equations. give all the positive values of the angle between 0 degrees and 360 degrees that will satisfy each. give any approximate value to the nearest minute only. a.) ( I got confused doing this 1 can you help me with it.) 3 sin theta - 4 cos theta...
Thursday, March 3, 2011 at 5:34pm

trigonometry (please double check this)
Solve the following trig equations. give all the positive values of the angle between 0 degrees and 360 degrees that will satisfy each. give any approximate value to the nearest minute only. 1. sin2ƒÆ = (sqrt 3)/2 2. sin^2ƒÆ = cos^2ƒÆ + 1/2 3. ...
Thursday, March 3, 2011 at 6:32am

trig
Richard is flying a kite. The kite string makes an angle of 57 degrees with the ground. If Richard is standing 100 feet from the point on the ground directly below the kite , find the length of the kite string
Wednesday, March 2, 2011 at 11:16pm

trig
y=sin pie divied by 2 theta
Wednesday, March 2, 2011 at 10:38pm

trig
covert polar equation r = 6/(2-3sinè) to rectangular equation
Wednesday, March 2, 2011 at 3:53am

Trig
Use Trig identities to verify that sec^4(x)-tan^4(x)=1+2tan^2(x), Only work with one side of the equation
Tuesday, March 1, 2011 at 5:23pm

algebra/trig
solve: ln12x = 6
Tuesday, March 1, 2011 at 3:03pm

trig
if cos(pi/4) is sqrt2/2 i thought sec(pi/4) is 2/sqrt 2,but its just sqrt 2 . can some one please explain.
Sunday, February 27, 2011 at 5:19pm

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