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The magnitude of a vector

Work out the magnitude of a vector

5 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.

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Grade 6–9 Core 🇬🇧 UK

Finding the Magnitude of a Vector

Maths Genie 25K views

Clear UK exam-style walkthrough of finding a vector's magnitude, including a worked exam question.

Jump to 0:00Finding the magnitude of a column vector 4:00Finding a vector and then finding its magnitude 8:43Another exam style question on finding the magnitude

Grade 6–9 Core 🇺🇸 US

Magnitude of a Vector

Mario's Math Tutoring 202K views

Quick, clear explanation of the magnitude formula using Pythagoras on a vector's components.

Jump to 0:50Formula for Finding the Magnitude of a Vector 1:16Showing How to Use the Pythagorean Theorem to find Magnitude 1:49Notation for the Magnitude of a Vector

Grade 7–9 Core 🇬🇧 UK

Column Vectors | GCSE Maths 2025

Matt | MyGCSEMaths 29K views

Short, clear UK video showing how to find a 2D vector's length using Pythagoras.

Grade 6–9 Core 🇬🇧 UK

Vectors : magnitude of a vector in 2D : ExamSolutions

ExamSolutions 80K views

Concise UK tutorial on finding the magnitude of a 2D vector with clear method.

Grade 6–9 Core 🇬🇧 UK

Vectors Explained | Foundation & Higher Tier | GCSE Maths

Windsor Education 60 views

IGCSE-focused walkthrough using Pythagoras to find a vector's magnitude, with practice.