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Cambridge IGCSE Mathematics

6.4Trigonometric functions

Trigonometric functions in Cambridge IGCSE Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic40 practice questions2 lessons

Learning objectives

What the syllabus expects you to be able to do.

  1. 6.4.1Extended: recognise, sketch and interpret the graphs of y = sin x, y = cos x and y = tan x for 0° ≤ x ≤ 360°.
  2. 6.4.2Extended: solve trigonometric equations in sin x, cos x or tan x for 0° ≤ x ≤ 360°.

Lessons

  • Graphs of trigonometric functions and equations

    25 min

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  • Trigonometric ratios of obtuse angles

    20 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Trigonometric functions: sample question

1 mark

Which of these is equal to sin⁡140∘\sin 140^\circ?

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