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OpenStudy (anonymous):
I have an obtuse triangle with an angle of 125 degrees, one side is 34.87cm and another 30cm, how do I find the length of the unknown side which is opposite the angle?
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OpenStudy (dumbcow):
law of cosines \[c^2 = a^2 +b^2 -2ab \cos C\]
OpenStudy (anonymous):
Ahhhh ok, thanks so very much :)
OpenStudy (anonymous):
Would it be cos of 125?
OpenStudy (dumbcow):
yes
OpenStudy (anonymous):
mmmm I am coming up with a huge number LOL
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OpenStudy (anonymous):
Ok got it now, thanks again :)
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