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\sin^{2} 2 θ - 3 \cos^{2} θ = 0

সমীকরণের সাধারণ সমাধান-

2 n π

n π \pm \frac{π}{3}

n π \pm \frac{π}{6}

2 n π \pm \frac{π}{6}

ANS : 2

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