Angles \( A, B \) and \( C \) of a triangle \( A B C \) are in A.P.
If \( \frac{b}{c}=\sqrt{\fra.... VIDEO
Angles \( A, B \) and \( C \) of a triangle \( A B C \) are in A.P.
If \( \frac{b}{c}=\sqrt{\frac{3}{2}} \), then \( \angle A \) is equal to
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(1) \( \frac{\pi}{6} \)
(2) \( \frac{\pi}{4} \)
(3) \( \frac{5 \pi}{12} \)
(4) \( \frac{\pi}{2} \)
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