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(\sin θ + i \cos θ)^{4}

এর মান হল-

(\sin 4 θ + i \cos 4 θ)

(\sin 4 θ - i \cos 4 θ)

(\cos 4 θ + i \sin 4 θ)

(\cos 4 θ - i \sin 4 θ)

ANS : 4

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