sinA * sinB = 1/2 * [cos(A - B) - cos(A + B)] This formula expresses the product of two sine functions in terms of the difference of two cosine functions. Specifically, sinA multiplied by sinB is equal to one-half times the difference between cos(A minus B) and cos(A plus B)...
2SinASinB formula is 2SinASinB = cos(A - B) - cos(A + B). It is used to simplify trigonometric expressions and solve various complex integration and differentiation problems.