E
Editor
Sep 18, 2022
The reduction of the equation $x+\sqrt{3}y+4=0$ in the normal form is:
Difficulty: Easy
A:
$x\cos 120^{\circ}+y\sin 120^{\circ}=2$
B:
$x\cos 270^{\circ}+y\sin 270^{\circ}=2$
C:
$x\cos 30^{\circ}+y\sin 30^{\circ}=2$
D:
$x\cos 240^{\circ}+y\sin 240^{\circ}=2$
ID: 63273db9ca83163ac3a111cf