Question

A ladder of length 8m is leaning against a wall angle made by the ladder with the floor is 40 degree find out height of the ladder above floor on wall

Answer 1

Step-by-step explanation:

As wall is always perpendicular so

In the triangle by Pythagoras theorem

(wall length)square + (length between the wall and the foot of ladder) square =(length of ladder) square

4.8 square ​+ length between the wall and the foot of the wall square = 6 square

23.04+length between wall and ladder square = 36

Length square = 36 - 23.04

Length = under root 12.96

Length = 3.6m