Maths with Lemon

The sine, cosine and tangent of an angle in a triangle

What you have to know:

You must be able to manipulate simple algebraic expressions.
(If not, check this lesson)
The Pythagorean Theorem.

Key Points

1. Watch the video:

2. Read this presentation

The Sine Rule

What you have to know:

The Pythagorean Theorem.

Key Points

1. Watch the video:

2. Read this presentation

The Cosine Rule

What you have to know:

The Pythagorean Theorem.

Key Points

1. Watch the video:

2. Read this presentation

Area of a Triangle (with Trigonometry)

What you have to know:

The Pythagorean Theorem.

Key Points

1. Watch the video:

2. Read this presentation

IB Past Paper Problems

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