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December 21, 2014

December 21, 2014

Posted by **Lucy** on Saturday, April 19, 2008 at 4:09pm.

Answer: (sqrt6 + sqrt2)/4

Is this correct?

- Algebra II -
**Damon**, Saturday, April 19, 2008 at 6:51pm15 deg

sin (30/2)= sqrt [(1-cos 30)/2 ]

cos 30 = sqrt 3 /2

sqrt [ (1- sqrt 3/2)/2]

sqrt [ (2 - sqrt (3) ) /4 ]

= (1/2) sqrt (2 - sqrt 3)

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