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1. If both x andy are in QI, and sin x- 5 and cos y = , find the exact value of sin(x-y ) 2'

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1. If both x andy are in QI, and sin x- 5 and cos y = , find the exact value of sin(x-y ) 2' suppose that X is in Qll and sin x= ? 25 1 find the exact value of tan ( 2x) 3 . suppose that e is in all and sine = 75, find the exact value of cos 20

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