canela2
canela2
25-03-2017
Mathematics
contestada
Law of cosines finding angle
Respuesta :
irspow
irspow
25-03-2017
The law of cosines is:
a^2=b^2+c^2-2bc*cosA where a,b,c are side lengths and A is the angle opposite the side on the other side of the equal sign...so
A=arccos(a^2-b^2-c^2)/(2bc)
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