Solution

prove

Solution

Solution steps
Use the Pythagorean identity:

Popular Examples

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

Frequently Asked Questions (FAQ)

  • Is cos^2(x)-1=-sin^2(x) ?

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