Class 12 Maths | Vectors Very Basics -1 | NCERT Ex 10.2 | Direction Cosines, Section Formula

Struggling with Class 12 Vectors Chapter? This lecture explains the very basics of Vectors in the simplest possible way using NCERT problems and clear illustrations.

In this session you will understand:
• Direction Ratios
• Direction Cosines
• Unit Vector
• Position Vector
• Section Formula
• Vectors joining two points
• Right-angled triangle using vectors
This lecture is extremely useful for:
✔ CBSE Class 12 Board Exams
✔ State Board Students
✔ JEE Main & Advanced
✔ NEET
✔ CUET
✔ BITSAT / VITEEE / WBJEE / COMEDK

Every question is solved step-by-step from NCERT Exercise 10.2, so even weak students can understand easily and score high marks.

If your basics of vectors become strong, 3D Geometry and Line & Plane will automatically become easy.

📚 Recommended: Watch this before starting 3D Geometry.

⏱️ Time Stamps (Important — boosts ranking)

00:00 Introduction
00:35 Vector with given magnitude & direction
02:05 Unit vector concept
04:30 Direction cosines of vector (i + 2j + 3k)
06:45 Vector joining two points A to B
09:10 Position vector explanation
12:00 Section formula (internal division)
14:20 Section formula (external division)
16:15 Right-angled triangle using vectors proof
18:40 MCQ – Triangle vector identities
🎯 What You Will Learn

After watching this video you will be able to:
• Find a vector in a given direction
• Calculate direction cosines
• Find position vector of a point
• Apply section formula in vectors
• Prove triangle properties using vectors
📢 About the Channel

sethiswiftlearn is dedicated to making Maths & Physics easy for 11th and 12th students and competitive exam aspirants.
Concept clarity + exam-oriented questions = Better marks + Better rank.

New lectures are uploaded regularly covering full syllabus and one-shot revisions.

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#class12maths
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Видео Class 12 Maths | Vectors Very Basics -1 | NCERT Ex 10.2 | Direction Cosines, Section Formula канала sethiswiftlearn