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169,249 results

Sayak (IIT Kharagpur) - Smart Choices After 12th
How I Scored 97 in Class 12 Maths Without NCERT.

You don’t need to study the whole syllabus to score 95+ in Class 12 Maths — you just need to be smart. Here’s exactly how I’d ...

9:15
How I Scored 97 in Class 12 Maths Without NCERT.

802 views

2 months ago

Khan Academy India - English
Types of vectors in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we realise that if the vectors are not free, then even if they have the same magnitude and direction, they may not be ...

9:14
Types of vectors in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

920 views

10 months ago

Khan Academy India - English
Components of a vector in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we talk about the components of a vector in 3D. For reference, we use unit vectors along x, y, and z axes and ...

8:49
Components of a vector in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

716 views

10 months ago

Khan Academy India - English
Section formula in 3D (Derivation) | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we derive the section formula for vectors for both internal and external division. We leverage the concept of ...

7:23
Section formula in 3D (Derivation) | Vector Algebra | Grade 12 | Math | Khan Academy

3,943 views

10 months ago

Khan Academy India - English
Projection of a vector | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we discuss the concept of projection. We try to find the projection of a given vector on another. We then apply what ...

8:38
Projection of a vector | Vector Algebra | Grade 12 | Math | Khan Academy

3,837 views

9 months ago

Khan Academy India - English
Equation of a line in space | 3D Geometry | Grade 12 | Math | Khan Academy

In this video, we learn how to find the equation of a line in 3D. We first look at the vector form - where it comes from and how to find ...

10:02
Equation of a line in space | 3D Geometry | Grade 12 | Math | Khan Academy

3,125 views

9 months ago

Khan Academy India - English
Angle between two lines | 3D Geometry | Grade 12 | Math | Khan Academy

In this video, we learn how to find the angle between two lines in 3D. We first understand how to do this when the vector forms are ...

7:42
Angle between two lines | 3D Geometry | Grade 12 | Math | Khan Academy

3,505 views

9 months ago

Khan Academy India - English
Minors and cofactors | Determinants | Grade 12 | Math | Khan Academy

In this video, we learn how to find minors and cofactors corresponding to the elements of a determinant. We start off with minors ...

7:30
Minors and cofactors | Determinants | Grade 12 | Math | Khan Academy

5,609 views

9 months ago

Khan Academy India - English
Dot product of vectors in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we familiarise ourselves with the formula for dot product of vectors. We look at a few scenarios and special cases.

9:48
Dot product of vectors in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

2,042 views

9 months ago

Khan Academy India - English
Cross product of unit vectors | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we familiarise ourselves with the formula for cross product of vectors. We look at a few scenarios and special cases.

6:06
Cross product of unit vectors | Vector Algebra | Grade 12 | Math | Khan Academy

1,772 views

9 months ago

Khan Academy India - English
Angle between vectors | Vector Algebra | Grade 12 | Math | Khan Academy

We look at ways to get information about the angle between two vectors from their dot product. We find the angle between vectors ...

7:52
Angle between vectors | Vector Algebra | Grade 12 | Math | Khan Academy

486 views

9 months ago

Khan Academy India - English
Adjoint of a matrix | Determinants | Grade 12 | Math | Khan Academy

In this video, we learn how to find the adjoint of a given matrix. We first find minors corresponding to each element. From the set of ...

4:07
Adjoint of a matrix | Determinants | Grade 12 | Math | Khan Academy

5,829 views

9 months ago

Khan Academy India - English
Equivalence relations and their properties | Relations and Functions| NCERT 12 | Math | Khan Academy

In this video, we break down the properties of equivalence relations in a clear and engaging way! You'll learn how to understand ...

8:34
Equivalence relations and their properties | Relations and Functions| NCERT 12 | Math | Khan Academy

733 views

10 months ago

Khan Academy India - English
Finding angles of a triangle | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we learn the skill of finding the angles of a triangle using dot products. We first find the vectors along the sides, then ...

10:52
Finding angles of a triangle | Vector Algebra | Grade 12 | Math | Khan Academy

341 views

9 months ago

Khan Academy India - English
Distance between skew lines (intuition) | 3D Geometry | Grade 12 | Math | Khan Academy

In this beautiful video, we first look at the 3D animation of 2 skew lines and try to get a feel of the minimum distance between them.

8:12
Distance between skew lines (intuition) | 3D Geometry | Grade 12 | Math | Khan Academy

11,425 views

9 months ago

Khan Academy India - English
Section formula in 3D (intuition) | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we find the vector which divides the line segment joining two given vectors in a given ratio. We first solve the problem ...

8:34
Section formula in 3D (intuition) | Vector Algebra | Grade 12 | Math | Khan Academy

477 views

10 months ago

Khan Academy India - English
Symmetric and skew symmetric matrices | Matrices | Grade 12 | Math | Khan Academy

In this video, we talk about symmetric and skew symmetric matrices. We first look at examples of each and then understand the ...

7:48
Symmetric and skew symmetric matrices | Matrices | Grade 12 | Math | Khan Academy

5,029 views

9 months ago

Khan Academy India - English
Finding area using cross product | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we derive the formula for the area of a parallelogram using the cross product. We then solve problems where we use ...

7:00
Finding area using cross product | Vector Algebra | Grade 12 | Math | Khan Academy

695 views

9 months ago

TwinAlfa Academy
Master Class 12 Math Special Standard Integrals | Derivation

Master Class 12 Math Special Standard Integrals | Derivation In this video, we will walk you through the important formulas of ...

16:23
Master Class 12 Math Special Standard Integrals | Derivation

20 views

1 year ago

Khan Academy India - English
Word problems using matrices and determinants | Determinants | Grade 12 | Math | Khan Academy

In this video, we solve word problems involving system of equations using the matrix method. We first represent 2 scenarios in the ...

8:13
Word problems using matrices and determinants | Determinants | Grade 12 | Math | Khan Academy

891 views

9 months ago