Question

Suppose that the point (x,y) is in the indicated quadrant. Decide whether the given is positive or negative.

25.) II, x/r
26.) III, y/r
27.) IV, x/y

Answer 1

r is always positive.
you should know the values of x and y in each of the quadrants.
It is ESSENTIAL that you learn the CAST rule.

Answer 2

positive