Solution

prove

Solution

Solution steps
Use the Pythagorean identity:

Popular Examples

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

Frequently Asked Questions (FAQ)

  • Is cos^2(b)+sin^2(b)=1 ?

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