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Sin A + Cos B = 1, A = 30° and B is an acute angle, then find the value of B.

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Sin A + Cos B = 1, A = 30° and B is an acute angle, then find the value of B.

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Sin 30˚ + Cos B = 1 

\(\frac{1}{2}\)+ Cos B = 1 

Cos B = \(\frac{1}{2}\)

B = 60˚

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