Coordinate in Space (Direction Cosines of Line). | Class 11 | Part-1 | NEB |

Dear all.
In this video, I have discussed the chapter Coordinate in Space of Class 11.
Topic Discussed from this chapter is.
1. Direction Cosines of a line
2. Prove that: 𝑙^2+𝑚^2+𝑛^2=1
3. Direction Cosine of a Coordinate axes
4. Direction Cosines of the Line through Two Given Points
5. Projection
6. To find the length of the projection of a given line on another line:
7. Projection of a line joining two points P (𝑥1, 𝑦1, 𝑧1) and Q (𝑥2, 𝑦2, 𝑧2) on another line with direction cosines 𝑙, 𝑚, 𝑛.
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