Solution

prove

Solution

Solution steps
Manipulating left side
Rewrite using trig identities
Use the Double Angle identity:
Simplify
We showed that the two sides could take the same form

Popular Examples

prove tan(2a)-tan(a)=tan(a)sec(2a)prove sin^2(x)-4cos^2(x)=5sin^2(x)-4prove (cot(x)-1)/(cot(x)+1)=(cos(2x))/(1+sin(2x))prove (1+tan^2(u))/(1-tan^2(u))= 1/(cos^2(u)-sin^2(u))prove 1+tan^2(-x)=sec^2(x)

Frequently Asked Questions (FAQ)

  • Is cos^2(5x)-sin^2(5x)=cos(10x) ?

    The answer to whether cos^2(5x)-sin^2(5x)=cos(10x) is True