Math Calculator

Sum to Product Trigonometry Identities Calculation

Trigonometry identities calculator to rewrite and evaluate sums of sines and/or cosines as products.


Enter u angle in degree:
Enter v angle in degree:


Formula Used:

sinu + sinv = 2 x sin(u+v/2) x cos(u-v/2) sinu - sinv = 2 x cos(u+v/2) x sin(u-v/2) cosu + cosv = 2 x cos(u+v/2) x cos(u-v/2) cosu - cosv = -2 x sin(u+v/2) x sin(u-v/2)