Proof of Sin(x+y) = SinxCosy + CosxSiny and Sin(x-y) = SinxCosy - CosxSiny

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Автор

Very very ossum video sir ji, you are really a gem. I guarantee you will reach the extreme heights, you are genius

suryanshkatoch
Автор

Thankyou Sir.. it's been really helpful.. especially during exams

spoorthic