Solution

prove

Solution

Solution steps
Use the Pythagorean identity:

Popular Examples

prove csc(x)sin(pi/2-x)=cot(x)prove cos(4θ)=2(cos(2θ))^2-1prove tan(2x)=(2sin(x)cos(x))/(2cos^2(x)-1)prove 1/(csc^2(x))+1/(sec^2(x))=1prove cot((5pi)/(12))=2-sqrt(3)

Frequently Asked Questions (FAQ)

  • Is cos^2(a)+sin^2(a)=1 ?

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