SOLUTION: If (-1,3) are the coordinates of a point on the terminal arm of angle B in standard position, then tan B is?

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Question 180405: If (-1,3) are the coordinates of a point on the terminal arm of angle B in standard position, then tan B is?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
in order to find the total angle we need to take arc tan of 1/3 and add that to 90 degrees. arctan 1/3=18.43 degrees
:
so angle B is 108.43 degrees
:
tan 108.43=-3