Question

Given the ordered pair P, determine the requested sin, cos, or tan of angle .

P(-5, -3)
tan =

-3/5
-5/3
3/5
5/3

Answer 1

tan is y/x so 3/5 and negatives cancel out

you can also find which quadrant the point is in and then determine if tan is pos or negative there - smarter choice!!

Answer 2

the side opposite the angle will be of length -3 ( y coordinate) and adjacent is -5 ( x coordinate)so

tan = opp/adj = -3/-5 = 3/5