Proof of Cos(x+y)= CosxCosy -SinxSiny

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Well explained, especially the initial part!

kartikkhullar
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Amazing explanation sir ... Best experience

NeymarUnknown
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nice sir
this derivation teach in easy way
thank you

gamer_god_yt
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Your are the best teacher no dought 👍😘😘

narinderkumarnarinderkumar
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You Teach So Nicely Sir, Mujhe ye nhi aata tha पर आपका वीडियो देखने के बाद मुझे अब ये समाज आ गया

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