Category:Cosine Form of Lagrange's Sine Identity
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This category contains pages concerning Cosine Form of Lagrange's Sine Identity:
- $\ds \sum_{k \mathop = 0}^n \sin k \theta = \dfrac {\map \cos {\frac 1 2 \theta} - \map \cos {n \theta + \frac 1 2 \theta} } {2 \map \sin {\frac 1 2 \theta} }$
Pages in category "Cosine Form of Lagrange's Sine Identity"
The following 2 pages are in this category, out of 2 total.