Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
A $15\ m$ long ladder reached a window $12\ m$ high from the ground on placing it against a wall at a distance a. Find the distance of the foot of the ladder from the wall.
Given: A $15\ m$ long ladder reached a window $12\ m$ high from the ground by placing it against a wall at a distance $a$.
To do: To find the distance of the foot of the ladder from the wall.
Solution:
Let $AC$ be the ladder, and $A$ be the window
$AC^2=AB^2+BC^2$
$\Rightarrow (15)^2=(a)^2+(12)^2$
$\Rightarrow 225-144=a^2$
$\Rightarrow 81=a^2$
$\Rightarrow \sqrt{81}=a$
$\Rightarrow a=9$
Updated on: 10-Oct-2022
27 Views
Advertisements