Q. 395.0( 1 Vote )

If a cos 3θ + 3 s

Answer :


a cos 3θ + 3 sin2 θ cos θ = m

sin 3θ + 3 a sin θ cos 2θ = n

Now adding both the equations we get,

Adding (i) and (ii) we get,

Hence, Proved.

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