Brahmagupta interpolation formula
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In trigonometry, the Brahmagupta interpolation formula is a special case of the Newton-Stirling interpolation formula, which calculates the values of sine at different intervals. The formula was developed by Brahmagupta in 665, which was later expanded by Newton and Stirling around a thousand years later to develop the more general Newton-Stirling interpolation formula.
The Brahmagupta interpolation formula is defined as:
![r sin\theta = \frac{\triangle\theta}{h} [(\frac{D_{p+1} + D_p}{2}) + \frac{\triangle\theta}{h}(\frac{D_{p+1} - D_p}{2})]](../../../math/5/8/8/58893461ea23e5c9670f2082fcdcf9d5.png)
