If the y-coordinate of P is 3/5, and P is in quadrant 2, find the x coordinate

Answer 1

(3/5)^2 +x^2= 1

9/25 +x^2 =1

x^2= (25/25) -(9/25)

x^2 =16/25

x= +/- (4/5)

In quadrant 2 x is negative so the x coordinate is (-4/5)