Originally Posted by

**rcs** Problem:

**From the lighthouse 20m above the level of the seawater, the angle of depression of a boat is 15 degrees. how far is the boat from the point of water level directly the point of observation**

can anybody let me understand me the problem... im so confused with problem ... i attempted to illustrate... im confused because it says that the angle of depression of a boat.... how come a boat has an angle of depression when the lighthouse is above the sea level...

please help me on this guys

thanks a lot