please solve this problem
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Answer:
A= 90º
Step-by-step explanation:
The given equation is
Sin(2A) = 2cos(A)
⇒ 2sin(A)cos(A) = 2cos(A)
⇒ 2sin(A)cos(A) - 2cos(A) = 0
⇒ 2cos(A)*(sin(A) - 1) = 0
⇒ cos(A) = 0 or sin(A) - 1 = 0
⇒ cos(A) = 0 or sin(A) = 1
⇒ A = 90º or A = 90º
⇒ A= 90º
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