Direction Cosines

Class 12 Three Dimensional Geometry Coordinate Geometry

direction cosines identity

Definition

Sum of squares of direction cosines equals unity.

equation of plane 3D

Class 12 Three Dimensional Geometry

vector equation of line

Class 12 Three Dimensional Geometry

distance point to plane 3D

Class 12 Three Dimensional Geometry

A = pi*r*r

Class 10 Circles

c*c = a*a + b*b

Class 10 Geometry

quadratic formula roots

Class 10 Algebra