Posted by jonathan on Monday, May 31, 2010 at 6:57pm.
the Angle of Elevation From a Ship to the Top of a Lighthouse on the Shore is 18 Degrees. If the Light House is 20 Meters Tall and at Sea Level How Far is the Ship From the Shore to the Nearest Meter..

math  MathMate, Monday, May 31, 2010 at 7:08pm
tan(x)=opposite over hypotenuse
x=18°
opposite=20m
tan(18°)=20m/hypotenuse
hypotenuse = 20m/tan(18°)
Can you take it from here?