math please help

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A (4,3)
B (3,-3)
c (-4,5)

Find the slope of AB, BC, and AC. Find the tangent of each angle and their angle measure (inv. tan)

using: tan of an angle =m2-m1/1+m1m2

m2 being the slope of the terminal side (measuring counterclockwise)

the triangle looks like this



c
a



b

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