Relate Sin(a + b) and Sin(a-b)

Author:
A B Cron
Topic:
Angles, Cosine, Sine
This demonstration uses area calculations.
GeoGebra Applet
Daniel Mentrard, Créé avec GeoGebra Translation to English by A. B. Cron [url]http://dmentrard.free.fr/GEOGEBRA/index.htm[\url]

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