Three Dimensional Geometry — Maths STD 12 Science — Question
Gujarat BoardEnglish MediumSTD 12 ScienceMathsThree Dimensional Geometry1 Mark
MCQ
A normal to the plane $x = 2$ is:
✓
$(0, 1, 1)$
B
$(2, 0, 2)$
C
$(1, 0, 0)$
D
$(0, 1, 0)$
✓
Answer
Correct option: A.
$(0, 1, 1)$
The plane $x = 2$ is perpendicular to $x$ axis
So the angle is $\frac{\pi}{2},\cos\frac{\pi}{2}=0$
$0$ The plane $x = 2$ is parallel to both $y$ axis and $z$ axis
So the angle is $(0, 1, 1)$
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