Posted by Abbey on Tuesday, November 4, 2008 at 10:00pm.
A ladder is leaning against a house and is forming a 60 degree angle with the ground. If the top of the ladder is 18 feet off of the ground, how long is the ladder? Leave your answer in exact form.

math(Please help!!!)  mellissa, Tuesday, November 4, 2008 at 10:08pm
i don't know

math(Please help!!!)  Damon, Tuesday, November 4, 2008 at 10:18pm
sin 60 = opposite/hypotenuse
opposite is 18
solve for hypotenuse 
math(Please help!!!)  regina, Tuesday, November 4, 2008 at 11:32pm
ummm sorry

math(Please help!!!)  Gigglesz, Sunday, March 7, 2010 at 5:34pm
the answer would be 20.78 but i don't know how to put that in exact form...sorry

math(Please help!!!)  Justina, Friday, October 5, 2012 at 4:38pm
Ha you must be grade 8 cause I got it my text book oh in back it says 4 m

math(Please help!!!)  taylor, Wednesday, December 18, 2013 at 7:51pm
i d k

math(Please help!!!)  julio, Monday, December 8, 2014 at 4:41pm
sin 60 degrees. 18/hyp
x.sin 60=0.8660
18.(0.8660)=x
15.588m = x