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Please solve Q9

If 3 \(\sin ^{2} A+2 \sin ^{2} B=1\) and 3 \(\sin 2 A-2 \sin 2 B=0\), where A and B are acute angles, then \(A+2 B\) is equal to

(a) \(\frac {\pi}{3}\)

(b) \(\frac {\pi}{4}\)

(c) \(\frac {\pi}{2}\)

(d) none of these

Updated Thu, 23 May 2019 03:34 pm

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