MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: Upto college level
        

How to measure the magnitude or length of a vector??

9 years ago

Answers : (1)

Deepak Patra
askIITians Faculty
471 Points
							

The formula for the length OP or |p| is a kind of 3 dimensional form of Pythagoras' theorem.
Here's how the working would go if we had a = 4 and b = 3 and c = 12.
Using Pythagoras' theorem in the yellow right-angled triangle we get 

OQ = the square root of (16 + 9) = 5

and then, using Pythagoras' theorem in the vertical green right-angled triangle, we get
OP = the square root of (25 + 144) = 13.

Alternatively, in just one step of working, we have

OP = the square root of (16 + 9 + 144) = 13.

9 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 3,180 off

COUPON CODE: SELF20


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 19 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 127 off

COUPON CODE: SELF20

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details