Question

In the given diagram $PQ=A,QR=B$, and $RS=C$ then $PS$ equals,

• A. A - B + C
• B. A + B - C
• C. A + B + C
• D. A - B - C
• E. - A - B - C

Answer 1

Answer: (C)

According to polygon law of vector addition

$A+B=PR$
and $PR+RS=PS$
$\Rightarrow A+B+C=PS$