Solution

prove

Solution

Solution steps
Manipulating left side
Use the negative angle identity:
We showed that the two sides could take the same form

Popular Examples

prove tan(θ)sin(θ)=2sin^2(θ)prove sqrt(3)csc(x)cot(x)+3csc(x)=0prove sin^2(pi/2)=1-cos^2(pi/2)prove cot(θ)-tan(θ)=(2cos(2θ))/(sin(2θ))prove tan(-u)*sin(-u)+cos(-u)=sec(u)

Frequently Asked Questions (FAQ)

  • Is cos(2x)=cos(-2x) ?

    The answer to whether cos(2x)=cos(-2x) is True