Posted by Danielle on .
A ladder is leaned 9m up a wall with its base 5m from the wall. What angle does the ladder make with the ground?

Math 
bobpursley,
what is arccos5/9 ?
Posted by Danielle on .
A ladder is leaned 9m up a wall with its base 5m from the wall. What angle does the ladder make with the ground?
what is arccos5/9 ?