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72 Answered Questions for the topic Trig Identities

Trig Identities Trig

03/19/17

prove that cosx-cosx sin^2x = cos^3x

Proving a trig identity and I dont know what to do

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Trig Identities Trigonometry Trig Trigonometric Identities

03/09/17

Proving Trig Identity

I'm having trouble trying to prove this trig identity. Help is greatly appreciated. Thanks in advance. 1/(csc-cot) = (1+cos)/sin

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Trig Identities

02/08/17

Simplify. sec 2 θsec2 θ − 1

How do you solve the problem?

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Trig Identities Trigonometry Trig Trigonometry Identities

12/03/16

Simple Trig, got lost and need help.

Solve the given equation over the interval [0,2): 2sinx+ (sqrt 3) sin^2x=-(sqrt 3) cos^2x A. x=0, and x=(pi/2), and x=(3 pi/2), and x=2(pi)x=(3 pi/2), and x=(7 pi/2) b. x=(4 pi/3) and x=(5... more

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Trig Identities Trigonometry Trig Trigonometry Identities

11/30/16

Need help with simple Trig!

Provide an exact evaluation of the expression: tan (-285°).

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Trig Identities

11/20/16

Trig Proof

Prove: 1/2(cotA-tanA) = cot2A

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Trig Identities

09/30/16

If sin(x) = 5 and sin(y)= 2/3 what is sin(y-x)?

the answer is (2 radical 3 - radical 5)/6 Just don't know how they got it.

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Trig Identities Trignometry

06/10/16

trig identies

1.prove each identitysin (q)/1+sin (q)-sin q/1-sin(q)=-2 tan^ 2 (q) 2.(cos^2 q/1-sin q )- (cos^2/1+sin q)

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Trig Identities Verify Precalculus Honors

05/31/16

what is the best option to verify sec(y)cos(y)=1

options a. cot u =sin (u)/cos(u) b. sec(-u)=sec(u) c. 1+tan^2(u)=sec^2(u) d.cos (u)=1/sec(u)

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Trig Identities

05/01/16

find smallest solution to cos^3 x + cos x sin^2 x =4sinx

2 decimal places

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Trig Identities Trigonometry Math Help Alegbra 2

04/30/16

Find cos T if sin T = 2/3

Assume the terminal side of the angle falls in Quadrant 2. Show all work.

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Trig Identities Trigonometry Trig Trigonometric Formulas

04/27/16

Find tan(2 Theta +pi) using the picture:

You have a right triangle and the hypotenuse is 10 and adjacent side is 6 and the opposite side is 8, this is what the triangle looks like except NO... more

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Trig Identities

04/26/16

prove the following trigonometric identity

sin2Ø-1 = 1 -1 tan2∅-1 sin2∅

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Trig Identities Product Sum identities

04/07/16

Find sin(x) given cos(2x)

If cos(2x)=4/5 and x terminates in quadrant 1, then find sin(x)

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Trig Identities

03/28/16

SecX / secX + cscX

the book says the answer should be sinX /sinX+cosX

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Trig Identities

03/23/16

Use a graph to answer the question

Use the graph to complete the identity. cos (x) tan x - 2tan x +5cos x-10/tan x +5= A.) cos x - 2 B.) sin x + 5cos x C.) sin x - 5 D.) cos x + 2 How do i insert a pic of a graph

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Trig Identities

03/23/16

Simplify the Identity

csc2(x) sec(x)=?

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Trig Identities Trig Functions Trig Functions & Values

03/13/16

I am trying to use the half-angle formulas, but I'm just stuck.

Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle.7π/12 5 sin(7π/12) = 9 cos(7π/12) = 5 tan(7π/12) =

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Trig Identities

03/13/16