Revision history of "Half angle identities"

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  • (cur | prev) 19:23, 7 September 2023Yiyj1 (talk | contribs). . (956 bytes) (+956). . (Created page with "The trigonometric half-angle identities state the following equalities: * <math>\sin \left(\frac{x}{2}\right) = \pm \sqrt{\frac{1 - \cos (x)}{2}}</math> * <math>\cos \left(\f...")