Thursday
March 26, 2015

Homework Help: math

Posted by christina on Friday, September 13, 2013 at 11:05pm.

Find, correct to the nearest degree, the three angles of the triangle with the given vertices.?

A(2, 0),B(4, 5), C(-3,2)

ANGLE- CAB
ANGLE- ABC
ANGLE- BCA
In degrees.

I got the vectors AB <,5>
BC <1,3>
AC <-1,2>

and I know the equation b.c= |b| |c| cos t

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