Solution

prove

Solution

Solution steps
Use the Angle Sum identity:

Popular Examples

prove sin(B)+cos(B)cot(B)=csc(B)prove 3sin(5pi-x)=3sin(x)prove cos^2(θ)=(1+cos(2θ))/2prove (cos^2(α))/(1-sin(α))=1+sin(α)prove 2sin^2(θ)-1=1-2cos^2(θ)

Frequently Asked Questions (FAQ)

  • Is sin(a+b)=sin(a)cos(b)+cos(a)sin(b) ?

    The answer to whether sin(a+b)=sin(a)cos(b)+cos(a)sin(b) is True