Mathematics · Trigonometry

If sin(2A) = 2 cos2A - 1 is not the case, and the given equation is sin(2A) = 2 cos(A) sin(A), let us correct the problem statement factually: If tan(A) = 1 for an acute angle, then A = 45°. If the intended equation is sin(2A) = 2 sin2A, then A = 45°. Let the verified problem be: If sin(2A) = 2 sin2A, find the value of acute angle 'A' (A ≠ 0°).