# Find the Angle Whose Sine is the Product of the Sine and Cosine of Two Other Angles

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This Demonstration shows a geometric solution of the trigonometric equation , where is unknown.

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Contributed by: Izidor Hafner (July 2017)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

The idea for this Demonstration comes from [1].

Reference

[1] J. Plemelj, *Iz mojega življenja in dela* (*From My Life and Work*), *Obzornik mat. fiz.*, 39, 1992 pp. 188–192.

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