clickto share

#### My Profile

My Profile [view full profile]

why create a profile on shaalaa.com?

1. Inform you about time table of exam.

2. Inform you about new question papers.

3. New video tutorials information.

1. Inform you about time table of exam.

2. Inform you about new question papers.

3. New video tutorials information.

#### shaalaa.com | Three Dimensional Geometry Introduction Part 1

#### Series 1: playing of 13

to track your progress

Three Dimensional Geometry

0%

Three Dimensional Geometry Introduction Part 1

00:22:02

00:22:02

Three Dimensional Geometry Introduction Part 2

00:22:02

00:22:02

Three Dimensional Geometry Introduction Part 3

00:17:53

00:17:53

Three Dimensional Geometry Introduction Part 4

00:10:37

00:10:37

Questions Part 1

00:23:01

00:23:01

Questions Part 2

00:17:38

00:17:38

Questions Part 3

00:28:53

00:28:53

Questions Part 4

00:20:43

00:20:43

Questions Part 5

00:22:02

00:22:02

Questions Part 6

00:23:32

00:23:32

Problems Based on Angle Between Two Lines Part 1

00:11:53

00:11:53

Problems Based on Angle Between Two Lines Part 2

00:05:53

00:05:53

Problems Based on Angle Between Two Lines Part 3

00:13:17

00:13:17

clickto share

### Feedback

### Submit video link for this topic

(if you have any topic related video then share link with us)### Description

- Direction cosines and direction ratios: direction angles, direction cosines, direction ratios
- Relation between direction ratio and direction cosines
- Angle between two lines
- Condition of perpendicular lines.