Posted by Anonymous on .
a person in a boat sights the top of a lighthouse at an angle of elevation of 20 degrees. if the lighthouse is 40 feet tall find the distance from the base of the lighthouse to the boat.

mathgeometry 
shresth,
length oflighthouse=4om
angle of depression=20
TAN 20=0.363
put the value and get the answer
answer is approx 108.xx