Maths with Lemon

Adding and subtracting vectors

What you have to know:

  • Addition and subtraction of numbers.

Key Points

  • 1. Watch the video:

  • 2. Vectors in 3 dimensions. Watch this video.

Finding vectors from given ones

What you have to know:

  • The Pythagorean Theorem.

Key Points

  • 1. Watch the video:

  • 2. Solved example with pathways and proofs with vectors. Watch the video.

Magnitude of a vector

What you have to know:

  • The Pythagorean Theorem.

Key Points

  • 1. Watch the video:

  • 2. Magnitude of a 3D vector. Watch this video.

Position Vectors

What you have to know:

  • The Pythagorean Theorem.

Key Points

  • 1. Watch the video:

Direction of a vector

What you have to know:

  • Trigonometric calculations of \(\sin \theta\), \(\cos \theta\) and \(\tan \theta\).

Key Points

  • 1. Watch the video:

Unit vectors i and j

What you have to know:

  • Trigonometric calculations of \(\sin \theta\), \(\cos \theta\) and \(\tan \theta\).

Key Points

  • 1. Watch the video:

  • 2. Unit vectors example solved. Watch this video.

IB Past Paper Problems

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