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Need solution for RD Sharma maths class 12 chapter 22 Algebra of Vectors exercise Multiple choice question 19

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Answer: \overrightarrow{A B}+\overrightarrow{B C}-\overrightarrow{C A}=0

Hint: According to diagram

Given: Which of the following is not true?

Solution:

\text { From the given diagram }

\begin{aligned} &\overrightarrow{A B}+\overrightarrow{B C}=\overrightarrow{A C} \\ &\overrightarrow{A B}+\overrightarrow{B C}-\overrightarrow{C A}=\overrightarrow{A C}-\overrightarrow{C A} \\ &\Rightarrow \overrightarrow{A B}+\overrightarrow{B C}-\overrightarrow{C A}=2 \overrightarrow{A C} \end{aligned}

Hence, \overrightarrow{A B}+\overrightarrow{B C}-\overrightarrow{C A}=0  is not true.

 

 

 

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