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 tan(pi/2-x)=cot(x)prove cos(pi/4-x)+cos(pi/4+x)=sqrt(2)cos(x)prove sin^4(x)-cos^4(x)=-cos(2x)prove (cos(x))/(tan(x))=csc(x)-sin(x)prove sec^2(θ)csc^2(θ)=sec^2(θ)+csc^2(θ)

Frequently Asked Questions (FAQ)

  • Is 1+tan^2(-x)=sec^2(x) ?

    The answer to whether 1+tan^2(-x)=sec^2(x) is True