CPM Homework Help : CCG Problem 4-43

When she was younger, Mary had to look up at a $68^\circ$ angle to see into her father’s eyes whenever she was standing $15$ inches away. How high above the flat ground were her father’s eyes if Mary’s eyes were $32$ inches above the ground?

Hint:

Draw a diagram and think about the slope ratio.

More Help:

The slope ratio for $68^\circ\approx \frac{5}{2} = \frac{\Delta y}{\Delta x}$ .