3-d

Question: The direction cosines of the normal to the plane $x+2y-3z+4=0$ are

1) $-\frac{1}{\sqrt{14}},-\frac{2}{\sqrt{14}},\frac{3}{\sqrt{14}}$

2) $\frac{1}{\sqrt{14}},\frac{2}{\sqrt{14}},\frac{3}{\sqrt{14}}$

3) $-\frac{1}{\sqrt{14}},\frac{2}{\sqrt{14}},\frac{3}{\sqrt{14}}$

4) $\frac{1}{\sqrt{14}},\frac{2}{\sqrt{14}},-\frac{3}{\sqrt{14}}$

Solution:

Explanation: No Explanation

System of co-ordinates Direction cosines and direction ratios Projection

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