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September 30, 2014

September 30, 2014

Posted by **Ali** on Monday, April 19, 2010 at 9:31pm.

sin 3x cos 3x = 1/2 sin 6x

can you show step by step please

- trig -
**Damon**, Monday, April 19, 2010 at 9:49pmsin 2 a = 2 sin a cos a identity

so

sin 6x = 2 sin 3x cos 3x

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