Solution

prove

Solution

Solution steps
Use the Pythagorean identity:

Popular Examples

prove cos(θ)tan(-θ)=-sin(θ)prove (sec^2(u)-1)/(sec^2(u))=sin^2(u)prove (cos^2(x))/(sin^2(x))=cot^2(x)prove cot(90)= 1/(tan(90))prove (-3sin^2(2x))/2 =(3cos(4x))/4

Frequently Asked Questions (FAQ)

  • Is cos^2(z)+sin^2(z)=1 ?

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