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Question

i f \sin θ + \frac{1}{2} \sin 2 θ = m \cos θ

\sin θ - \frac{1}{2} \sin 2 θ = n \cos θ

m^{2} - n^{2}

=?

4√mn

4mn

1/(mn)

1/√ (mn)

ANS : 1

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