Question 890455
A step ladder has legs of length  2.2m and the maximum distance between the legs is 0.9m. Find the largest possible angle in which the ladder can be opened.
------------
If you view it as a triangle, it's isosceles.  
1/2 the angle at the top = asin(0.45/2.2) =~ 11.8 degs
--> 23.6 degs
-----------------------
Ladders don't have a sharp points at the top, tho.