![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5ce03772da6694357ad2836e6a85e41f.png\")
tall.Captain of a ship at sea sights a lighthouse which is tall.
Captain measures the angle of elevation to the top of the lighthouse to be ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=80d913344bd4d299ea0aab36172ad5a7.png\")
.
Find the distanceof the ship to the base of the lighthouse.
\Angle of elevation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6157b83687bfa9b4ebfeb4d8b8c1ba2a.png\")
.
Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6a81feb85349a1eefa2f30e80a097bac.png\")
in the formula.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8b3c8674e313eb32b397b7c69a70c276.png\")
The distance between ship to the base of the lighthouse is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5d5f97fb16b2199b79201aefff24078e.png\")