A) Zero
B) \[{{\tan }^{-1}}(P/Q)\]
C) \[{{\tan }^{-1}}(Q/P)\]
D) \[{{\tan }^{-1}}(P-Q)/(P+Q)\]
Correct Answer: A
Solution :
Resultant \[\vec{R}=\vec{P}+\vec{Q}+\vec{P}-\vec{Q}=2\vec{P}\] The angle between \[\vec{P}\] and \[2\vec{P}\] is zero.You need to login to perform this action.
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