trig
posted by Fabian onyango ndege .
Express sin4xcos3x as a sum or differences of sines and cosines

use your producttosum formulas:
sinAcosB = 1/2 (sin(A+B) + sin(AB))
sin4x cos3x = 1/2 (sin7x + sin(x))
posted by Fabian onyango ndege .
Express sin4xcos3x as a sum or differences of sines and cosines
use your producttosum formulas:
sinAcosB = 1/2 (sin(A+B) + sin(AB))
sin4x cos3x = 1/2 (sin7x + sin(x))