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Question 5 (vii)Prove the following identities, where the angles involved are acute angles for which the expressions are defined.(vii) (sinθ−2sin3θ)(2cos3θ−cosθ)=tanθ |
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Answer» Question 5 (vii) Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (vii) (sinθ−2sin3θ)(2cos3θ−cosθ)=tanθ |
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