Solution

prove

Solution

Solution steps
Use the Angle Sum identity:

Popular Examples

prove tan^2(x)=((1-cos(2x)))/(1+cos(2x))prove cos(0)tan(0)=sin(0)prove cos(pi/6)= 4/3 cos^3(pi/6)prove tan(-pi/4)=-1prove sin^2(x)= 1/(1+cot^2(x))

Frequently Asked Questions (FAQ)

  • Is sin(z+w)=sin(z)cos(w)+cos(z)sin(w) ?

    The answer to whether sin(z+w)=sin(z)cos(w)+cos(z)sin(w) is True