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If a tan θ = b, then a cos 2θ + b sin 2θ = [EAMCET 1981, 82; MP PET 1996; J & K 2005]

Answer»

If a tan θ = b, then a cos 2θ + b sin 2θ =

[EAMCET 1981, 82; MP PET 1996; J & K 2005]




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