Trigonometry Examples

Verify the Identity cos(A-B)-cos(A+B)=2sin(a)sin(b)
cos(A-B)-cos(A+B)=2sin(a)sin(b)
Step 1
The provided equation is not an identity.
cos(A-B)-cos(A+B)=2sin(a)sin(b) is not an identity
 [x2  12  π  xdx ]