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Mathematics, 14.05.2021 16:50 Absynthe3986

CosA=4/5(A in IV) and sin B =2/3 (B in II) Find sin(B-A)
Find Cos(B/2)

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CosA=4/5(A in IV) and sin B =2/3 (B in II) Find sin(B-A)
Find Cos(B/2)

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