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Please Solve R.D.Sharma class 12 Chapter 22 Algbra of Vectors Exercise 22.2 Question 1 Maths Textbook Solution.

Answers (1)

Answer:

The value of \vec{PR}=\vec{a}+\vec{b}

Hint:

Use,\vec{PQ}+\vec{QR}=\vec{PR}

Given:

P,Q,R are collinear.

Solution:

                                                                       

P,Q,R are collinear, they lie on the same line

\begin{aligned} &\overrightarrow{P Q}=\vec{a} \text { and } \overrightarrow{P R}=\vec{b} \\ &\overrightarrow{P Q}+\overrightarrow{Q R}=\overrightarrow{P R} \\ &\vec{a}+\vec{b}=\overrightarrow{P R} \\ &\overrightarrow{P R}=\vec{a}+\vec{b} \end{aligned}

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