Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days
For Business Enquiry


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

sir,my question is:

Asked by prabhakar p 13th March 2013, 8:18 AM
Answered by Expert
We are not able to see any figure you attached with your question. But, I am trying to answer your question based upon my understanding of the rest of it. 
Direction ratios and cosines are vector quantities i.e. they have a direction in addition to just the magnitude. 
So, here in you would like to define the vector as AB then you need to consider A as you first point and B as your second point and hencce, direction ratio would  be ( 2,0,-2). However if you defined BA as you line, then the direction of the line has reverseed and so now B is your first point and A is your second point and thus, d.r. are (2,0,-2). 
Answered by Expert 13th March 2013, 5:47 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Free related questions

23rd May 2017, 5:09 PM
23rd May 2017, 1:46 PM
23rd May 2017, 3:24 PM
23rd May 2017, 2:36 PM

Chat with us on WhatsApp