math
posted by kevin spence on .
from the top of a tower, the angle of depression of a boat is 30 degree. if the tower is 20 meter high, how far is the boat from the foot of the tower?

sin30/20 = sin60/x
posted by kevin spence on .
from the top of a tower, the angle of depression of a boat is 30 degree. if the tower is 20 meter high, how far is the boat from the foot of the tower?
sin30/20 = sin60/x