Solution

prove

Solution

Solution steps
Use the Angle Sum identity:

Popular Examples

prove-cos(-x)+sec(x)=tan(x)sin(x)prove 1/(1-tan^2(θ))+1/(1-cot^2(θ))=1prove (sec^2(x)-6tan(x)+7)/(sec^2(x)-5)=(tan(x)-4)/(tan(x)+2)prove 1-cos(x)=2sin^2(x/2)prove cos(3A)=4cos^3(A)-3cos(A)

Frequently Asked Questions (FAQ)

  • Is sin(α+β)=sin(α)cos(β)+sin(β)cos(α) ?

    The answer to whether sin(α+β)=sin(α)cos(β)+sin(β)cos(α) is True