Revision history of "Sum-to-product identities"

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  • (cur | prev) 19:25, 7 September 2023Yiyj1 (talk | contribs). . (526 bytes) (+526). . (Created page with "Here are the sum-to-product identities: * <math>\sin (x) + \sin (y) = 2 \sin \left(\frac{x + y}{2}\right) \cos \left(\frac{x - y}{2}\right)</math> * <math>\sin (x) - \sin (y)...")