Newest Trigonometry Identities Questions

74 Answered Questions for the topic Trigonometry Identities

Trigonometry Identities Trigonometry

06/17/21

Simplify with a calculator

Cos (90 +x) x tan(540 +x) x cos(180 - x) + sin(-90)

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Trigonometry Identities Calculus Trigonometry Trig

12/07/20

Trig Identities

Given 𝑠𝑖𝑛 𝛼 = 7 and 𝑠𝑖𝑛 𝛽 = 3, 𝛼 and 𝛽 in quadrant II, find 25 5(a) 𝑠𝑖𝑛(𝛼 + 𝛽), (b) 𝑡𝑎𝑛(𝛼 + 𝛽), and (c) the quadrant of 𝛼 + 𝛽.

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Trigonometry Identities Trigonometry

10/08/20

Trigonometry Identities

Is -tanx simpler than -sinx/cosx? Or do i leave my simplified answer as -sinx/cosx instead of changing it to -tanx?

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Trigonometry Identities Trigonometry Trigonometry Functions

06/27/20

find sin theta, given sec theta= 4/3 and tan theta<0

I know that theta must be in the fourth quadrant but I am lost on what identities to use for solving sin theta.

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Trigonometry Identities Trigonometry

05/22/20

For triangle ABC, angle A = 26 degrees, a = 7 cm, b = 15 cm. Determine ALL possible values for c. Round your final answer.

Apparently there might be more than one answer

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Trigonometry Identities

07/26/18

If Sinθ+sin²θ=1 Prove that cos²θ+Sin⁴θ=1

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Trigonometry Identities

07/10/18

Solve the equation for 0<q<360. Secθ=(2sqrt3)/3

Trig equation and identity

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Trigonometry Identities

06/06/18

cos^2∅tan∅sec∅=sin∅

Prove each trigonometric identities.

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Trigonometry Identities

04/12/18

Verify the following Identity:

tanθcos2θ=(2tanθcos2θ-tanθ/1-tan2θ)

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Trigonometry Identities

03/25/18

sin(45+x).sin(45-x)=1/2cos2x

prove that sin(45+x).sin(45-x)=1/2cos2x

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Trigonometry Identities

03/22/18

trig exercise of sums and differences identities

If cosα=0.891 and cosβ=0.577 with both angles’ terminal rays in Quadrant-I, find the values of tan(α+β)Your answers should be accurate to 4 decimal places. please help, thanks!

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Trigonometry Identities

03/22/18

trig exercise of sums and differences identities

If cosα=0.173 and cosβ= 0.432 with both angles’ terminal rays in Quadrant-I, find the values of cos(α+β)=? cos(α-β)=? Your answers should be accurate to 4 decimal places. please help! thanks !

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Trigonometry Identities Trigonometry Pre Calculus Trigonometric Functions

03/02/18

Solve on the interval [0,2pi) 1-cos theta = (2 - sqrt 3)/2

I dont quite remember how to solve this, if anyone could help.

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Trigonometry Identities Trigonometry Trig Trigonometric Identities

01/28/18

Need Help Solving cos -105 with sum or difference identity

The question is cos -105. I know how to do the process for it but for some reason my answer doesn't have the right negatives. I am getting: √2 + (-√6) -------------- 4 The actual... more

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Trigonometry Identities Trigonometry Trig Tangent

01/26/18

Can't Solve -1-√3 * 1-√3 ------- ------ 1+√3 * 1-√3

I am doing sum and difference formulas with sin, cos, and tan. I am doing tan75 with the difference formula. So tan 120-45 I have all the things found I just don't know how to multiply it... more

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