A spotlight on a boat is y = 2.5 m above the water, and the light strikes the water at a point that is x = 9.5 m horizontally displaced from the spotlight (see the drawing). The depth of the water is 4.0 m. Determine the distance d, which locates the point where the light strikes the bottom.

m

http://img529.imageshack.us/img529/6...6100altza6.gif

I believe this is just a trig problem?

is this correct?