class 12

Math

3D Geometry

Three Dimensional Geometry

The distance of the point $(1,3,−7)$from the plane passing through the point $(1,−1,−1),$having normal perpendicular to both the lines$1x−1 =−2y+2 =3z−4 and2x−2 =−1y+1 =−1z+7 is:$$83 5 $ (2) $74 10 $ (3) $74 20 $ (4) $83 10 $