Solution
prove
Solution
Solution steps
Use the Angle Sum identity:
Popular Examples
prove cos(x)+cos(x)tan^2(x)=sec(x)prove prove (sin(θ))/(tan(θ))=cos(θ)prove prove tan(x)csc(x)cos(x)=1prove prove cos(x)(tan(x)+cot(x))=csc(x)prove prove 1/(1-sin^2(y))=1+tan^2(y)prove
Frequently Asked Questions (FAQ)
Is cos(α+β)=cos(α)cos(β)-sin(α)sin(β) ?
The answer to whether cos(α+β)=cos(α)cos(β)-sin(α)sin(β) is True