In the given figure, if $\overrightarrow{P Q}=\vec{A}, \overrightarrow{Q R}=\vec{B}$ and $\overright

Question

In the given figure, if $\overrightarrow{P Q}=\vec{A}, \overrightarrow{Q R}=\vec{B}$ and $\overrightarrow{R S}=\vec{C}$ then $\overrightarrow{P S}$ equals

Professor PC Thomas Classes · Answer

(c) : Join PR. From the triangle law of addition \ $ \overrightarrow{P R}=\overrightarrow{P Q}+\overrightarrow{Q R}=\vec{A}+\vec{B} $ \  Again from the triangle law of addition \ $ \overrightarrow{P S}=\overrightarrow{P R}+\overrightarrow{R S}=\vec{A}+\vec{B}+\vec{C} $