Question: (8) Find the exact value of cos(150) cos(750). Do not use calculator. Use trigonometric identities. (9) Find the angle a as shown in the

(8) Find the exact value of cos(150) cos(750). Do not use calculator. Use trigonometric identities. (9) Find the angle a as shown in the triangle below. 25 20 18 (10) Give an equation or trigonometric function that be*t, represents the graph shown below'.
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