INDEX:-
1. DISTANCE FORMULA AND EXAMPLE
2. SECTION FORMULA AND EXAMPLE
3. SHORT TRICK FOR RATIO QUESTIONS
4. DIRECTION COSINES
5. DIRECTION RATIOS
6. ANGLE BTW TWO LINES
7. EQUATION OF STRAIGHT LINE IN 3D, EQUATION OF X AND Y- AXIS
8. PLANES
9. EQUATIONS OF PLANES
10. DISTANCE BTW PLANES
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