Yao Ming is 7 ft. & 6 inches in tall. The free throw line is 15 ft. from a point below the basketball ring. The height of the goals is 10 ft. If Yao Ming will shoot a free throw, what is the angle of depression from the basket ring to the top of the head of Yao Ming?
Did you make a sketch?
draw a horizontal from the top of his head
I see a right-angled triangle with a height of 2.5 and a base of 15
let the angle be Ø
tanØ = 2.5/15 = .16666..
Ø = 9.46
or Ø = appr 9.5°