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