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sin^3x.sin3x=underset(mrarr0)(oversetnsu...

`sin^3x.sin3x=underset(mrarr0)(oversetnsumC_mcosmx` is an identity in x,where `C_m` s are constants then find the value of 'n'.

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PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
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