AQAMathsExam Board Revision

AQA Maths Trigonometry Revision Notes

Master AQA Maths Trigonometry using simple revision notes, key facts and practice questions — all generated by AI for your exam.

Trigonometry is a branch of mathematics that studies the relationships between the angles and sides of triangles, particularly right-angled triangles. It is fundamental in various fields such as physics, engineering, and architecture.

Key Concepts

  • 1Sine, Cosine, and Tangent are the primary trigonometric ratios.
  • 2The unit circle is essential for understanding trigonometric functions.
  • 3Trigonometric identities help simplify expressions and solve equations.
  • 4Graphs of sine, cosine, and tangent functions exhibit periodic behavior.
  • 5Inverse trigonometric functions allow for angle determination from known ratios.

Simple Explanation

Trigonometry helps us understand triangles, especially right-angled ones. The three main functions, sine, cosine, and tangent, relate the angles of a triangle to the lengths of its sides. We use these functions to solve problems involving angles and distances. Additionally, we can visualize these functions using graphs, which show how they repeat in a regular pattern.

Memory Trick

“SOH-CAH-TOA: Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent.”

Flashcards

Question1 / 5

What is the sine of an angle?

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Exam Questions

Describe and explain the sine, cosine, and tangent functions, including their graphs. [6 marks]

6 marks
View mark scheme hint▾

Define each function, provide a graph, and discuss their properties.

Explain how to use the sine rule to find unknown sides in a triangle. [4 marks]

4 marks
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State the sine rule and provide an example of its application.

What is meant by the term 'trigonometric identity'? [2 marks]

2 marks
View mark scheme hint▾

Define trigonometric identity and provide an example.

Practice Quiz

Question 1 of 5Score: 0

What is the value of sin(30°)?

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