Math Refresher for Scientists and Engineers

... 2 sin A cos A Power cos 2A = cos2 A — sin2 A = 1 -2 sin2 A = 2 cos2 A- 1 2 tan A tan 2A 1 -tan2 A Product s'n^ cos B = 5 SU104 + B) + ì sin(A — B) sin A cosi? = ìcos(A — B) — ìcos(A + B) cos A cos 5 = ìcos(A — B) + ìcos(A + B) sin2A ...