Lereesa

A 5m long ladder rests on a vertical wall. if the bottom of the ladder slides away from the wall at 1m/s, how fast is the angle between the lader and the ground changing when the bottom of the ladder is 3m from the wall?

lim tan x - x/ x -> 0 x^2

lim tanx - x x->0 x^2

lim x-> 0 if tan x - x / x^2