The direction cosines of the unit vector perpendicular to the plane \(r \cdot(6 \hat{i}-3 \hat{j}-2 \hat{k})+1=0\) passing through the origin are
A. \(\frac{6}{7}, \frac{3}{7}, \frac{2}{7}\)
B. 6, 3, 2
C. \(-\frac{6}{7}, \frac{3}{7}, \frac{2}{7}\)
D. -6, 3, 2
Answer:C
The direction cosines of the unit vector perpendicular to the plane \(r \cdot(6 \hat{i}-3 \hat{j}-2 \hat{k})+1=0\) passing through the origin are
A. \(\frac{6}{7}, \frac{3}{7}, \frac{2}{7}\) B. 6, 3, 2 C. \(-\frac{6}{7}, \frac{3}{7}, \frac{2}{7}\) D. -6, 3, 2