3-D Geometry 12th NCERT Maths Chapter 11,Plane, Angle between two planes,Distance from given plane

This vedio for 12th standard and also for competitive exams.
Lecture -07

Lecture-06

Lecture-05

Lecture-04

Lecture-03

Lecture-02

This vedio about 3D geometry .
Basic knowledge and concept...
Link is-

plane