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(θ)csc^2(θ)-tan(θ)=cot(θ)prove cos(α+β)+cos(α-β)=2cos(α)cos(β)prove (1-cos(2x))/(1+cos(2x))=tan^2(x)prove (1-sin(v))/(cos(v))+(cos(v))/(1-sin(v))=2sec(v)prove 9sec^2(θ)-5tan^2(θ)=5+4sec^2(θ)

Frequently Asked Questions (FAQ)

  • Is 1-sin^2(-θ)=cos^2(θ) ?

    The answer to whether 1-sin^2(-θ)=cos^2(θ) is True