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Posted by **Stephan pultree** on Sunday, April 29, 2012 at 2:06am.

- Maths trig -
**Steve**, Sunday, April 29, 2012 at 10:50amsin2t = 2 sint cost

sin3t = sint cos2t + cost sin2t

(cos2t = 1 - 2sin^2 t)

- Maths trig -
**Stephan pultree**, Sunday, April 29, 2012 at 12:27pmThanks :)

- Maths trig -
**Stephan pultree**, Sunday, April 29, 2012 at 12:29pmWhats the workings out to get to these answers ? Jw ta

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