Cartesian to Polar Coordinate 4

Question

Convert the Cartesian coordinate (-5, -6) to polar coordinates, .

r =   

 =   

Answer 1

(-5,-6) is quadrant III

tanA = -6/-5 = 1.2

A = about 50.2 or 180+50.2 = 230.2

only 230.2 degrees is in quadrant III