1. Tardigrade
  2. Question
  3. Physics
  4. If a and b are two vectors, then the value of (a× b)× (a-b) is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. If a and b are two vectors, then the value of $ (a\times b)\times (a-b) $ is

MGIMS WardhaMGIMS Wardha 2013

Solution:

$ (a+b)(a-b)=a\times a-a\times b+b\times a-b\times b=0 $ $ a\times b=-b\times a $ and $ a\times a=0 $ $ (a+b)\times (a-b)=2(b\times a) $