12 To answer questions 12 17 use the formulas for functions

Last updated: 3/5/2023

12 To answer questions 12 17 use the formulas for functions of the difference and sum of two angles to find without tables or calculator the cosine sine and tangent of the angle 15 using 45 and 30 sin 15 A sin 45 cos 30 cos 45 sin 30 B cos 45 cos 30 sin 45 sin 30 C cos 45 cos 30 sin 45 sin 30 OD sin 45 cos 30 cos 45 sin 30