Question: 19 To answer questions 18 20 use the formulas for functions of the difference and sum of two angles to find without tables or calculator

19 To answer questions 18 20 use the formulas for functions

19 To answer questions 18 20 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 255 cos 255 O A B 6 2 4 OC 2 6 4 O D 6 2 4 6 2 4

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