Would appreciate help thank you. Simplify the following expression sin5x cos2x + sin2X cos5X= ?
= 2 sin2X cos5X
using cos A cos B - sin A sin B = cos (A+B) we get puting A = 5x, B = 2x above is cos 7x
Are you sure because it doesnt ask for values of such but rather the end form
yes i am sure
which math are u in precalculas
Yeah precalc, how did you know?
because we studied this
in 9th grade
that helps u to do it
Oh i see, so the answer would be A = 5x, B = 2x cos=7x?
u r correct