Akite is tied to the ground. the rays from the sun hit the kite perpendicular to the kite string, casting a shadow of the kite on the ground. the coordinates in the diagram are given in feet. what is the distance from where the kite is tied to the shadow? (3,12) (0,0)

So looking at the coordinates 3,12  and 0,0  if you were to add those two you would get 15 but the kite went up to about 12 feet high into the sky but it is at an angle of 3 feet ( perpendicular ) so I think that my best answer to give you is 15

But if you re looking for distance its  (Y2 - Y1) / X2 - X1
0 - 12 Divided by 3 - 0     |   -12 / Divided by 3 = -4
Than your answer would be -4

dose this help you in any way?