Draw a side view of the situation, then the basket is 50 inches above the height of the the eyes of the two boys.
distance of derek to point below the basketball is x
of Sam to a point below the basketball is y
tan29 = 50/x ---> x = 50/tan29
tan 43 = 50/y --->y = 50/tan43
distance between the boys = x-y
= 50/tan29- 50/tan43
= 36.583 inches
= or 3.05 ft
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