## anonymous one year ago A 13 foot ladder is leaning on a tree. The bottom of the ladder is on the ground at a distance of five feet from the base of the tree. The base of the tree and the ground form a right angle as shown: https://s3.amazonaws.com/ufiles.edcite.net/u/dormanmath/tree_question1816.JPG

1. anonymous

plz help me! i think it is 8

2. anonymous

it is not 8

3. anonymous

solve $5^2+x^2=13^2$ for $$x$$

4. anonymous

$5 \tan \left(\cos ^{-1}\left(\frac{5}{13}\right)\right)=12$