3-d

Question: The direction cosines of the normal to the plane $2x+3y-6z=5$ are

1) $2,\,\,3,\,\,-6$

2) $\frac{2}{7},\,\frac{3}{7},\,-\frac{6}{7}$

3) $\frac{2}{5},\,\,\frac{3}{5},\,-\frac{6}{5}$

4) None of these

Solution:

Explanation: No Explanation

System of co-ordinates Direction cosines and direction ratios Projection

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