Question: Question 2 [15 Marks] (Long Answer Question) File Upload Required (a) State the trigonometric identity that relates sin (0) to cos(20), and cost(0) to cos(20).

 Question 2 [15 Marks] (Long Answer Question) File Upload Required (a)

State the trigonometric identity that relates sin (0) to cos(20), and cost(0)

Question 2 [15 Marks] (Long Answer Question) File Upload Required (a) State the trigonometric identity that relates sin (0) to cos(20), and cost(0) to cos(20). (b) Evaluate cos? (x) cos(-3x) dac (c) Evaluate cost (5x) da

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