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