CBSE Class 11 commerce: Sum and Difference Formulae Videos | Sum and Difference function
Sum and Difference function
This video explains the derivation of the formula of sin A + sin B, cos A + cos B, sin A - sin B, cos A - cos B and 2sinxcosy, 2sinxsiny, 2cosxcosy, 2cosxsiny and their application in simplifying the identities.
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