Solution
Solution
Solution steps
Use the Pythagorean identity:
Popular Examples
prove tan(a)sin(a)+cos(a)=sec(a)prove sin((3pi)/4)=sin(3/4 pi+2pi)prove (cos(θ)+cos(3θ))/(2cos(θ))=cos(2θ)prove (cos(x)+cot(x))/(1+csc(x))=cos(x)prove (sin(x)+1)^2+cos^2(x)=2sin(x)+2
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