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Misc ch-7 q)42

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Misc ch-7 q)42

Posted by ?????? ???? . 3 years, 11 months ago

CBSE > Class 12 > Mathematics

1 answers

Sumit Pundeer 3 years, 11 months ago

Cos2x = cos²x-sin²x Then a²-b² Then cut the common part Then substitute cosx+sinx = t Then it's easy

1Thank You

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