E
Editor
Sep 18, 2022
$\forall x,y>0, if z=(x,y)$ then Arg z =
Difficulty: Easy
A:
$\pi +\tan^{-1}\frac{y}{x}$
B:
$\pi -\tan^{-1}\frac{y}{x}$
C:
$\tan^{-1}\frac{y}{x}$
D:
$\tan^{-1}\frac{-y}{x}$
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ID: 63273dbaca83163ac3a121cb