A) \[90{}^\circ \]
B) \[60{}^\circ \]
C) \[45{}^\circ \]
D) \[30{}^\circ \]
Correct Answer: C
Solution :
The moduli! of cross and dot product of vector \[\overrightarrow{A}\]and\[\overrightarrow{B}\]are\[AB\text{ }sin\text{ }\theta \]and\[AB\text{ cos }\theta \] respectively. Therefore, the given condition, \[AB\sin \theta =ABcos\theta \] or \[tan\text{ }\theta =1\]or \[\theta =45{}^\circ \]You need to login to perform this action.
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