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278 Answered Questions for the topic Trigonometric Functions

Trigonometric Functions Trigonometry Math Help

11/15/17

Trig functions

cos(3theta)=-1 solve for exact solutions over the interval [0,360 degrees]   I am having trouble finding a place to start.
Trigonometric Functions Trigonometry Math Help

11/15/17

Trig questions

I am getting stuck at 7 plus or minus sqrt 309 / 26   13sin^2x-7sinx=5 solve for interval [0,360degrees] 
Trigonometric Functions

10/24/17

find an equation of a sinusoidal function that has minimum at the point (2,1) has a period of 8 and an amplitude of 3

 find an equation of a sinusoidal function that has minimum at the point (2,1) has a period of 8 and an amplitude of 3
Trigonometric Functions Trig Intervals

10/23/17

cos(4theta)-cos(6theta)=0

cos(4θ)-cos(6θ) on the interval 0≤θ<2π
Trigonometric Functions

10/19/17

Solve the equation on the interval 0 less than or equals theta less than 2 pi 0≤θ<2π. 2 cosine theta plus 1 equals 0 2cosθ+1=0

Solve the equation on the interval 0 less than or equals theta less than 2 pi0≤θ<2π.2 cosine theta plus 1 equals 02cosθ+1=0
Trigonometric Functions Trigonometry

10/04/17

find the angle in radians in the figure below if s=10 and r=7

you haveto change it from radians to degrees 
Trigonometric Functions Trigonometry

10/01/17

Even-odd and periodic properties of trigonometric functions

-sin(3x+2π)+cos(-3x)•tan(π-3x)
Trigonometric Functions Optimization

09/19/17

finding the max of a trig function

f(x) = 5sin (-4x)-3 in the domain 0<x<2 pi i know how to find the derivative f'(x) = -20 cos (-4x)   but i am unsure as to how you solve this for critical... more
Trigonometric Functions Trigonometric Identities

09/14/17

By definition of amplitude, in order for a function to have an amplitude the function must be...

There are 2 possible answers I can choose from. Either Bounded or Continuous
Trigonometric Functions

08/25/17

cos θ =  1 2 and θ terminates in QIV

Find the remaining trigonometric functions of θ based on the given information. cos θ = 12and θ terminates in QIV
Trigonometric Functions

08/25/17

If g(x.y) = cos(3x + 4y) , what is the range of g(x,y) in interval notation?

 I know that the range of cos(x) is [-1,1], but I'm not sure how to calculate the range for this function.
Trigonometric Functions Math Pre Calculus

08/18/17

True or False: For a one-to-one function, y= f(x), then x = f^-1(y)

How do you get the solution?
Trigonometric Functions

08/08/17

Trig function

1.A mass on a spring moving up and down is an example of harmonic motion. If the height of the spring mass system follows the function h(t)=5cos2t , where t is the time in seconds and h is the... more
Trigonometric Functions Trigonometry

08/07/17

Prove the Identity (step by step)

sin(x) + sin(3x) = 4 sin(x) cos^2(x)
Trigonometric Functions Trigonometry

08/07/17

Solve exactly on the interval [0, 2π). (Enter your answers as a comma-separated list.)

16 cos(2θ) = 16 cos^2(θ) − 9
Trigonometric Functions Trigonometry Trigonometry Identities

07/31/17

Find the values of the six trigonometric functions if the conditions provided hold.

cos(2θ) = 1/√2 (1 divided by square root 2)90° ≤ θ ≤ 180°
Trigonometric Functions Trigonometry Trig

07/31/17

find the exact values of the expressions without solving for x.

If sin(x) = 1/4 and x is in quadrantI,find the exact values of the expressions without solving for x.   (a) sin(2x) (b) cos(2x) (c) tan(2x)
Trigonometric Functions Trigonometry Trigonometry Identities

07/31/17

Find the exact value algebraically.

Find the exact value algebraically of sin(105°)
Trigonometric Functions Trigonometry

07/31/17

Find the exact value of 17π/12

Find the exact value of 17π/12
Trigonometric Functions Algebra 2

07/29/17

What is the angle of elevation θ when B has rappelled 75% of the way down the cliff?

A is standing 50 feet from the base of a 100-foot-tall frozen waterfall. B is rappelling down the ice face. Round the answer to the nearest tenth of a degree.
Trigonometric Functions

07/29/17

if cosθ+cos∅=a and sinθ+sin∅=b than show that cos(θ+∅)= a²-b²/a²+b²

Plz help me to prove this...
Trigonometric Functions Algebra 2 Unit Circle

07/26/17

Find the area of the sector to the nearest square root

A sprinkler is designed to rotate 360 degrees clockwise, and then 360 degrees counterclockwise to water a circular region with a radius of 12 feet. The sprinkler is located in the middle of the... more
Trigonometric Functions Trigonometry Graph

07/23/17

Identify the asymptotes in the graph f(x) = −5 cot(2x)

Identify the asymptotes in the graph f(x) = −5 cot(2x),(Enter your answers as a comma-separated list of equations.)
Trigonometric Functions Trigonometry

07/18/17

Find all solutions in the inerval [0,360)

cos^2(theta)+8cos(theta)+5=0 Answer in degrees
Trigonometric Functions Trigonometry Mathematics

07/15/17

Trigonometry related doubt

the number of all possible ordered pairs (x,y),x,y belongs to R satisfying the system of equations x+y=2pi/3,cosx +cosy=3/2
1 3 5 6 7 12

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