What is the value of [ [(cos3θ+2cos5θ+cos7& - Exam Yatra

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SSC CGL Tier-2 19-February-2018 Maths
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What is the value of [ [(cos3θ+2cos5θ+cos7θ)÷(cosθ+2cos3θ+cos5θ)]+sin2θtan3θ?

[SSC CGL Tier-2 19-February-2018 Maths]

A cos 2θ

B sin 2θ

C tan 2θ

D cot θ sin 2θ

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