Solution

prove

Solution

Solution steps
Use the Pythagorean identity:

Popular Examples

prove cos(2x)=2cos^2(x)-1prove prove tan(θ)sin(θ)+cos(θ)=sec(θ)prove prove sin(3x)=3sin(x)-4sin^3(x)prove prove cos(θ)(tan(θ)+cot(θ))=csc(θ)prove prove csc(x)-csc(x)cos^2(x)=sin(x)prove

Frequently Asked Questions (FAQ)

  • Is cos^2(x)+sin^2(x)=1 ?

    The answer to whether cos^2(x)+sin^2(x)=1 is True