A particle starting from the origin $(0, 0)$ moves in a straight line in the $(x, y)$ plane. Its coordinates at a later time are $(\sqrt 3 , 3) .$ The path of the particle makes with the $x-$axis an angle of ......... $^o$
- [AIPMT 2007]
- A$45$
- B$60$
- C$0$
- D$30$
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- [JEE MAIN 2019]
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