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Sin 7A = cos 3A, then m∠A is what?
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Sin 7A = cos 3A, then m∠A is what?

User Yosef Bernal
by
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1 Answer

2 votes

Answer:

m∠A = 9°

Explanation:


\sin 7A = \cos 3A \\ \\ \sin 7A = \sin(90 \degree - 3A) \\ \\ 7A = 90 \degree - 3A\\ \\ 7A + 3A= 90 \degree \\ \\ 10A= 90 \degree \\ \\ A = (90 \degree)/(10) \\ \\ m \angle A =9 \degree

User Harsh Nagarkar
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6.8k points
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