Solution

prove

Solution

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

Popular Examples

prove cos(6x)=2cos^2(3x)-1prove tan^2(x)-tan^2(x)sin^2(x)=sin^2(x)prove csc(2x)=(csc(x))/(2cos(x))prove (1-tan(x))/(1+tan(x))=(1-sin(2x))/(cos(2x))prove csch^2(x)=coth^2(x)-1

Frequently Asked Questions (FAQ)

  • Is csc^2(-θ)-1=cot^2(θ) ?

    The answer to whether csc^2(-θ)-1=cot^2(θ) is True