Class 12 Maths Vectors & 3D Geometry Full Revision🔥 | Chapter 10 & 11 | Board Exam 2026

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Class 12 Core Maths Chapter 10 (Vectors) and Chapter 11 (3D Geometry) complete NCERT-based revision for CBSE Board Exam 2026 🎯

Includes important concepts, formulas, direction cosines, vector product, line & plane in 3D, and most expected board exam questions.

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00:00 - Introduction & Welcome
08:35 - Vectors vs Scalars (Basics)
11:46 - Initial & Terminal Points, Magnitude
16:34 - Types of Vectors
35:40 - Direction Cosines (l, m, n)
40:40 - Section Formula
47:53 - Scalar (Dot) Product
54:58 - Projection of a Vector
55:40 - Vector (Cross) Product
01:00:03 - Area using Cross Product
01:05:01 - PYQs: Magnitude & Addition
01:25:47 - Vector with Given Magnitude
01:40:27 - Section Formula Application
01:51:10 - Collinear Points Problem
01:55:50 - Angle between Vectors
02:11:12 - VIP: Vector Resolution
02:29:05 - Angle when a + b + c = 0
03:36:26 - Start: 3D Geometry
03:37:10 - Line Equation (Vector & Cartesian)
03:43:12 - Two-Point Form
03:48:07 - Angle between Lines
03:49:30 - Shortest Distance Concepts
03:54:33 - Line Problems (Parallel Axes)
03:57:45 - Point on Line (Given Z)
04:02:15 - Line & XY-plane Intersection
04:07:22 - Point at Given Distance
04:16:11 - Check Lines Intersection
04:42:41 - Shortest Distance (Full Steps)
04:56:01 - VIP: Foot of Perpendicular & Image

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