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April 16, 2014

April 16, 2014

Posted by **lindsay** on Tuesday, April 24, 2012 at 6:47am.

- trigonometry -
**Reiny**, Tuesday, April 24, 2012 at 7:33amThe equation you gave is NOT an identity,

Did you mean

sin (2Ø)/(1 - cos^2 Ø) = 2cotØ ?

LS = 2sinØcosØ/(sin^2 Ø)

= 2cosØ/sinØ

= 2cotØ

= RS

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