Solution

prove

Solution

Solution steps
Use the Pythagorean identity:

Popular Examples

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

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