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Answer all the questions with basic steps on how to solve them. Explanation is not needed. MAKEUP 7) Find the exact value of cos 12

Answer all the questions with basic steps on how to solve them. Explanation is not needed.

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MAKEUP 7) Find the exact value of cos 12 1 STT cos(xty ) - cosl x )cos(y)- sin(x] sin(y) 10s ( #) cos (To) - sin( it ) sin( FB ) cos( ) - 56-12 sin ( )- 58+ 16. 16- 52 4 8) Given that cos A = = , where i S A s 2x and sin B = _. . where O

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