Solution
Solution
Solution steps
Use the Pythagorean identity:
Popular Examples
prove cos(-(xpi)/3)=cos((xpi)/3)prove 1+sin(x)=cos(x)prove sin(2y)=(2tan(y))/(1+tan^2(y))prove sec^2(β)+sec^2(β)= 2/(cos^2(β))prove 3csc(x)-cot(x)=(3-cos(x))/(sin(x))
Frequently Asked Questions (FAQ)
Is (sin^2(x)-1)=-cos^2(x) ?
The answer to whether (sin^2(x)-1)=-cos^2(x) is True