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Mathematics, 09.11.2019 22:31 rachel63892
Find the exact value of cos(a+b) given that sin(a) = -1/2 with angle a in quadrant 4, and sin(b) = 1/4, with angle b in quadrant 2
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Find the exact value of cos(a+b) given that sin(a) = -1/2 with angle a in quadrant 4, and sin(b) = 1...
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