Friday
October 24, 2014

Homework Help: Math: Trigonometry

Recent Homework Questions About Trigonometry

Post a New Question | Current Questions

Trig
find the exact values of the six trig functions of angle... sin(-315degrees) how do i do this?
Thursday, September 1, 2011 at 9:16pm

trig
a propeller turns at 300 rpm. Find the angular speed in rad/sec and the linear speed at the tip if the tip to the center is 30cm
Thursday, September 1, 2011 at 12:35pm

Trig
assume A= alpha using complementary rule how do I solve for alpha? cos(2A+40) =sin(3A-60) I don't understand how to start the question. What are the steps in solving for alpha. Do i get cos to equal sin somehow?
Thursday, September 1, 2011 at 2:11am

trig
find the next two positive and negative angles coterminal with the quadrantal angle. 90 degrees. would the answer be..... would it be 450, 810?????? and -630, -270 ????
Monday, August 29, 2011 at 2:48am

Trig
cos270degrees -5cos180degrees (0/1)-5(-1/1) 0-5(-1) does it equal -5 or +5?
Monday, August 29, 2011 at 2:29am

Trig
Find the angle of the measure formed by the clock. 2:15
Monday, August 29, 2011 at 1:21am

Trig
A soccer goal is 24 feet wide. Point A is 40 feet in front of the center of the goal. Point B is 40 feet in front of the right goal post. Which angle is larger A or B? How much larger?
Sunday, August 28, 2011 at 2:39pm

trig
5sin^2 270degrees -3cos180degrees-tan(-180degrees) i got -2 but I'm not sure if i did it right?
Sunday, August 28, 2011 at 6:43am

trig
Suppose that 0degrees<theta<180degrees. what is the sign of each of the following? a) cos theta/2 b)sin(-theta)
Sunday, August 28, 2011 at 5:47am

trig
Use the appropriate identity to find tan(theta) given that cot theta =0.05.
Friday, August 26, 2011 at 11:15pm

trig
Use trigonometric identities to find sec theta, given that tan theta = Radical 5/ 3.
Friday, August 26, 2011 at 7:45pm

trig
Suppose that 0degrees<theta<180degrees. what is the sign of each of the following? a) cos theta/2 b)sin(-theta)
Friday, August 26, 2011 at 7:43pm

trig
If a, b are the solutions of the equation log base 3 (5-2x)+ log base 3 (5+2x)=2 find the value of the product ab.
Friday, August 26, 2011 at 3:29pm

trig
find the value of x when: x= 5 log base 2 (1/16)+ 8 log base 3 (27)
Friday, August 26, 2011 at 3:15pm

trig
use trig identities to rewrite: (1/(1-cos4v))-(1/(1+cos4v))
Friday, August 26, 2011 at 12:31am

calculus
Find two unit vectors that make an angle of 60° with v = ‹3, 4›. Give your answers correct to three decimal places. I'm not sure what to do here; I believe that I use to definition of a dot product (or maybe cross product) with relation to the trig function (...
Wednesday, August 24, 2011 at 10:45am

trig
what is the reference angle for 17 pi/12?
Tuesday, August 23, 2011 at 11:22pm

Trig
Find values of all six trig functions if sin(theta)= 4/5 and theta is in the second quadrant.
Tuesday, August 23, 2011 at 2:47pm

trig
cos@-4SIN@=1 then sin@+4cos@=
Sunday, August 21, 2011 at 11:25am

trig
If 2tanA+cot A=tan B, then prove that 2tan(B-A)=cot A
Sunday, August 21, 2011 at 1:08am

trig
A ferris wheel with a diameter of 100 feet rotates at a constant rate of 4 revolutions per minute. Let the center of the ferris wheel be at the origin. 1. Each of the ferris wheel's cars travels around a cirlce. a) Write an equation of the circle where x and y are measured...
Saturday, August 20, 2011 at 4:21pm

trig
(sec theta + cosec theta) (sin theta +cos theta) = 2 + sec theta cosec theta
Saturday, August 20, 2011 at 4:32am

trig
a plane is flying with airspeed of 140 mph and heading 280 degrees. The wind currents are running at 20mph at 260 degrees clockwise from due north. Find the true course and ground speed of the plane.
Friday, August 19, 2011 at 1:13pm

trig
sina=^10 sinb=^5 find a+b if a,b are acute angles
Friday, August 19, 2011 at 12:33pm

trig
sina=^10 sinb=^5 find a+b if a,b are acute angles
Friday, August 19, 2011 at 12:30pm

trig
how do you find all the values of theta from 0 degrees through 360 degrees for which sin theta equals 0
Thursday, August 18, 2011 at 9:37pm

trig
i can not figure out how to write the complex number in rectangular form the question is 4(cos 5Pie/6 + i sin 5 pie/6)
Wednesday, August 17, 2011 at 9:57pm

Trig
Find the polar coordinates of (8, –8) for r ≥ 0. I am getting 8 square root of 2 as the first coordinate. I am not sure if I am finding the arctan correctly.
Monday, August 15, 2011 at 10:52pm

trig and cotagent
Evaluate cot(11pi/6) to the nearest hundredth (given in radians).
Monday, August 15, 2011 at 12:38am

trig
Solve the equation for cos theta-tan theta=0 for greater than or egual to zero but less than 2pi. Write your answer as a multiple of pi, if possible form the following choices: pi , 5pi A. --- ---- 4___ 4 B. pi 3pi 5pi 7pi ----- '----- '-----'----- 4_____ 4_____ ...
Monday, August 15, 2011 at 12:32am

trig
Solve the equation for cos(3theta/2).tan(3theta/2)for greater than or egual to zero but less than 2pi. Write your answer as a multiple of pi.
Monday, August 15, 2011 at 12:29am

trig
sin2xcosx-sinx=0 interval(0,2pi)
Sunday, August 14, 2011 at 3:07pm

trig
Find the smallest positive value of x(in degree) for which tan(x+100°)=tan(x+50°)*tanx*tan(​x-50°)
Saturday, August 13, 2011 at 11:38am

trig
A tower is supported by a guy wire from the top of the tower to the ground 16 ft from its base. The wire makes an angle of 62 with the ground. The length of the wire is a. 30.09 ft b. 18.12 ft c. 28.41 ft d. 34.08 ft
Friday, August 12, 2011 at 1:54pm

Trig/pre-calc
r=8cos(theta)+5sin(theta), convert the polar equation into a rectangular equation and then complete the square and determine the center radius...? Help?! I missed the section, and am not getting anywhere with the text...
Friday, August 12, 2011 at 7:21am

trig
Find sin(2theta) if tan of theta = 7/24, pi < theta < 3pi/2 ?
Tuesday, August 9, 2011 at 11:03pm

trig
If z=1+i, then the multiplicative inverse of z esqaire is:
Monday, August 8, 2011 at 5:18am

trig
Find sec theta if theta=3/4 in Q1
Sunday, August 7, 2011 at 11:23pm

Pre-calculus
find the trig functions of angle x if the terminal side of x passes through the point (-12, 5).
Sunday, August 7, 2011 at 10:35pm

Precalculus
How would you solve this trig function: cos2x=sin^2-2 how do you know what trig identities to use?
Saturday, August 6, 2011 at 5:39pm

Geometry
30-60-90 triangle has a hypoteneuse of 10 use trig to find the short side
Wednesday, August 3, 2011 at 9:58am

Math
What are some examples of exponential function (Using the formula: Al = A0(1/2)^t/h ), trig functions that are used to find amplitude, period, max, min etc., and combinations of transformation at home or in life in general?
Saturday, July 30, 2011 at 7:45pm

trig
An arc subtends an angle 15 degrees at the centre of the circle. If the radius is 4 centimetres, find the area of the sector?
Friday, July 29, 2011 at 10:18pm

Trig
A car is traveling at a speed of 55 mph with a bearing of 210°. What vector represents the velocity?
Thursday, July 28, 2011 at 10:24pm

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

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