ladder leans against a building is tall.
The angle between the ground and ladder is .
Find the hight of the ladder reached building.
Observe the figure .
The hight of the ladder reached building is
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8ef4b4ae82cabbfaa49da421478fc853.png\")
tall. tall.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=02638d7832b0c457c8e4be2d9fa76633.png\")
.![\"\"](\"/userfiles/33743(1).gif\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=052db0c408648680542b5b83ab59a281.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d813567a7664c63f23ba44b4bfc22bfb.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0b025d7fa9f6790193529d9385230167.png\")