A) \[{{\tan }^{-1}}(2)\]
B) \[{{\tan }^{-1}}(1/2)\]
C) \[45{}^\circ \]
D) \[0{}^\circ \]
Correct Answer: A
Solution :
According to the condition of question \[\tan \,\text{ =}\frac{{{\upsilon }_{y}}}{{{\upsilon }_{x}}}=\frac{20}{10}=2\] \[\therefore \] \[\,\text{=}\,\text{ta}{{\text{n}}^{-1}}(2)\]
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