For the points A(3,0),B(5,2)and c(7,-2),calculate the angle BAC
For the points A(3,0),B(5,2)and c(7,-2),calculate the angle BAC
Use your formulae. What do you get?
Couple of ways to do this:
a) you could apply the law of cosines, or
b) you could find the difference of the slopes of the lines AB and AC, then take the arctangent of the result.
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