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OpenStudy (lucaz):
how do I find the length of b? http://img7.imageshack.us/img7/5247/ez38.jpg
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OpenStudy (raden):
use the cosines rule
OpenStudy (raden):
|dw:1384645816664:dw|
OpenStudy (raden):
b^2 = (1/2 α)^2 + (1/2 α)^2 - 2(1/2 α)(1/2 α)cos120 simplify, then solve for b
OpenStudy (lucaz):
thanks..
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