Question

1 sine = 8,0<o< , find the exact value of each of the following. (a) sin (20) (b) cos (20) (c) sin 2 (d) cos 8 2 (a) sin (20)
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Answer #1

sino =4 (OSOLI coso = 2-sino so, 1- 16 81 = 81-16 81 coso = √65 q (i) sim (20) 2 sino coso VGS 2 ( casos sin (20) = 0.7963 coBY THIS WAY, ANSWER OF GIVEN PROBLEM.

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