Kinematics Question 282
Question: Let $ \overrightarrow{A}=\hat{i}A\cos \theta +\hat{j}A\sin \theta $ be any vector. Another vector $ \overrightarrow{B} $ Which is normal to a is [BHU 1997]
Options:
A) $ \hat{i}B\cos \theta +jB\sin \theta $
B) $ \hat{i}B\sin \theta +jB\cos \theta $
C) $ \hat{i}B\sin \theta -jB\cos \theta $
D) $ \hat{i}B\cos \theta -jB\sin \theta $
Correct Answer: C Dot product of two perpendicular vector will be zero.
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