SOLUTION: Points with vertices (-1,6) (-3,4)(2,-1) find the interior angle of a triangle in point (-1,6)

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Question 821786: Points with vertices (-1,6) (-3,4)(2,-1) find the interior angle of a triangle in point (-1,6)
Answer by Alan3354(69443) About Me  (Show Source):
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Points with vertices (-1,6) (-3,4)(2,-1) find the interior angle of a triangle in point (-1,6)
Labele them A(-1,6) B(-3,4) C(2,-1)
Find the slope of AB and AC
The slope is the tangent of the angle wrt the x-axis.
Subtract to find angle BAC