The equation of a plane passing through the point with position vector ‘a’ and perpendicular to ‘b’ is
1
\(\rm \bar r.\left( {\bar a \times \bar b} \right) = 0\)
2
\(\rm \bar r.\left( {\overline {\bar a} \times \bar b} \right)\)
3
\(\rm \bar r.\left( {\bar b \times \bar a} \right)\)
4
\(\rm \left( {\bar r - \bar a} \right).\bar b = 0\)