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#1 2008-04-01 03:10:45

tony123
Member
Registered: 2007-08-03
Posts: 229

three sides of a triangle

Let

be the three sides of a  triangle , and let

, be the angles opposite them. If
,

find

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#2 2008-10-17 10:47:00

bitus
Member
Registered: 2008-10-12
Posts: 20

Re: three sides of a triangle

......=(1989c^2-c^2)/2c^2=994    Note that cot(a) is negative!

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