sinA+Cos B
=1, A=30°, and B is an acute angle, then find the value of B
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Answer:
B = 60°
Step-by-step explanation:
sin30° + cosB = 1
1/2 + cosB = 1
cosB = 1 - 1/2
cosB = 1/2
cosB = cos60°
B = 60°
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