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(x)+tan(y))/(cot(x)+cot(y))=tan(x)tan(y)prove (cos(pi/2+x))/(cos(pi+x))=tan(x)prove 1-cos(2x)=tan(x)sin(2x)prove 1=sec^2(2x)-tan^2(2x)prove 2cot(2x)=cot(x)-tan(x)

Frequently Asked Questions (FAQ)

  • Is 1+tan^2(-θ)=sec^2(θ) ?

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