6 Answered Questions for the topic Trigonometry Indentities

Trigonometry Indentities

04/03/16

prove identity: sin2a plus sin2b plus sin2c =4sina sinb sinc

 a, b and c are angles of a triangle

12/07/15

Please Help. Establish Identity: sin(x+y)/tan(x)+tan(y)= cos(x)cos(y)

Please Help. Establish Identity: sin(x+y)/tan(x)+tan(y)= cos(x)cos(y)
Trigonometry Indentities Proof Integral Calculus Indefinite Integrals

04/20/15

Given the substitution, prove the integral is true

Given that u = Pi - x , prove that the integral from 0 to Pi of x*f(Sin(x)) dx is equal to (Pi/2) * the integral from 0 to Pi of f(Sin(x)) dx   I took the derivative of U and got du = 0-1dx,... more
Trigonometry Indentities

04/01/14

I can not figure out how to work this Trig Identity problem

2cos2θ+sinθ=1
Trigonometry Indentities

04/08/13

cos2(x)-cos6(x)=0

find the solutions of the equation in the interval [0, 2pi)
Trigonometry Indentities

01/24/13

cot^2x+cscx-1=0

find solutions with trigonometric identities 

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