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  • Provide Solution For R.D.Sharma Maths Class 12 Chapter 22 Algebra of Vectors Exercise 22.2 Question 5 Maths Textbook Solution.

Provide Solution For  R.D.Sharma Maths Class 12 Chapter 22 Algebra of Vectors  Exercise 22.2 Question 5 Maths Textbook Solution.

Answers (1)

Answer:

  1. True
  2. False
  3. False

Hint:

use vector algebra.

Given :

 \vec{a},\vec{b} are two vectors.

Solution

        (i) \; \; \; \; \; \; \: \: \: \vec{a}=-\vec{b}

|\vec{a}|=|\vec{b}|

\vec{a}=-\vec{b}

|\vec{a}|=|-\vec{b}|

    |\vec{a}|=|-||\vec{b}|

|\vec{a}|=1 \cdot|\vec{b}|

|\vec{a}|=|\vec{b}|

(i)\: \: \: \: \: Is \; \; \; true

(ii) \quad|\vec{a}|=|\vec{b}|=\vec{a}=\pm \vec{b}

                       

(ii)\: \: is \: \: false

(iii) \: \quad|\vec{a}|=|\vec{b}|=\vec{a}=\pm \vec{b}

|\vec{a}|=|\vec{b}|

            a=b

(iii)\: false.

            

Posted by

infoexpert21

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