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February 28, 2015

February 28, 2015

Posted by **mien** on Wednesday, February 1, 2012 at 7:18am.

- trig -
**Reiny**, Wednesday, February 1, 2012 at 11:16amprove : cotØsinØ = cosØ

LS = (cosØ/sinØ)(sinØ

= cosØ

= RS

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