Wednesday

April 16, 2014

April 16, 2014

Posted by **phillip** on Friday, May 10, 2013 at 7:35pm.

thank you

- trig identites -
**Steve**, Friday, May 10, 2013 at 11:48pmsince sin(n*180) = 0,

2x+60 = n*180

x = n*90 - 30

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