Product to Sum Trigonometry Identities Calculator
Trigonometry calculator to rewrite and evaluate the trigonometric functions using power reduction formulas. The power reduction formulas are obtained by solving the second and third versions of the cosine doubleangle formula.
Product to Sum Trigonometry

Enter U Angle

Enter V Angle

Result:
Formula Used:
sinusinv = 1/2 [ cos(uv)  cos(u+v)]
cosucosv = 1/2 [ cos(uv) + cos(u+v)]
sinucosv = 1/2 [ sin(u+v) + sin(uv)]
cosusinv = 1/2 [ sin(u+v)  sin(uv)]
Product to sum trigonometry identities calculation is made easier here.