Question

2
A 15 m long ladders is placed
against a wall to reach a window
15 m high. Find the length of the
foot of the ladder from the wall.​

Answer 1

Answer:

Step-by-step explanation:

instead of 15 m high of window there should be 12 m high then the answer will be :

In given figure,

AC = 15 metres long ladder

AB = 12 metres high

CB = 'a' metres

Now,

∆ ABC is a right angled triangle.

Angle ABC = 90°.

By Pythagoras theorem,

(AC)^2 = (BC)^2 + (AB)^2

(15)^2 = (a)^2 + (12)^2

225 = (a)^2 + 144

225 - 144 = (a)^2

81 = (a)^2

9 = a

Therefore, the foot of the ladder is 9 metres away from the wall

Read more on Brainly.in - https://brainly.in/question/2873419#readmore