The distance of the plane `vecr.(2/7hati+3/7hatj-6/7hatk)=1` from the origin is (A) 1 (B) 7 (C) `1/7` (D) none of these

Distance of the plane vec r . (2/7 i + 3/7 j + 6/7 k ) = 1 from the origin is

The distance of the plane barr.(2/7i+3/7j-6/7k)=1 from the origin is …......

Find the distance of a point (2,5,-7) from the plane vecr.(6hati-3hatj+2hatk)=4

Find the distance of the point (3, 3, 3) from the plane vecr.(5hati+2hatj-7hatk)+9=0 .

The planes vecr.(2hati+3hatj-6hatk)=7 and vecr.((-2)/7hati-3/7hatj+6/7hatk)=0 are (A) parallel (B) at righat angles (C) equidistant from origin (D) none of these

The planes vecr.(2hati+3hatj-6hatk)=7 and vecr.((-2)/7hati-3/7hatj+6/7hatk)=0 are (A) parallel (B) at righat angles (C) equidistant from origin (D) none of these

The vector veca=1/4(2hati-2hatj+hatk) (A) is a unit vector (B) makes an angle of pi/3 with the vector (hati+1/2 hatj-hatk) (C) is parallel to the vector 7/4hati-7/4hatj+7/8hatk (D) none of these

The vector veca=1/4(2hati-2hatj+hatk) (A) is a unit vector (B) makes an angle of pi/3 with the vector (hati+1/2 hatj-hatk) (C) is parallel to the vector 7/4hati-7/4hatj+7/8hatk (D) none of these

Find the distance between the planes vecr*(hati-2hatj-2hatk)=7 and vecr*(5hati-10hatj-10hatk)=15.

Find the acute angle between the planes vecr(2hati-3hatj+5hatk)=1 and vecr(hati-hatj-hatk)=7 .