278 Answered Questions for the topic Trigonometric Functions

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.

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

#### 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...
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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.

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...
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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

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°

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

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...

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...
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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

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

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