-3
9
9.3333
The coordinate of (5, 3) is in the 1st quadrant
8
2
If sin (theta) is 3/5, then sin2 (theta) is (3/5)2, or 9/25.
8
If you mean the point (7, 9) then it is in the 1st quadrant
12
5
Quadrant 1: (1,5) Quadrant 2: (-2,3) Quadrant 3: (-3,-3) Quadrant 4:(4,-1)