Solution

prove

Solution

Solution steps
Use the Pythagorean identity:

Popular Examples

prove tan(-x)=tan(x)prove cos^2(2θ)-sin^2(2θ)=2cos^2(2θ)-1prove csc(x)*cos^2(x)+sin(x)=csc(x)prove cos(2u)=2cos^2(u)-1prove tan(2x)(1-tan^2(x))=2tan(x)

Frequently Asked Questions (FAQ)

  • Is sin^2(t)+cos^2(t)=1 ?

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