Pure · E Trigonometry · E10

Double angle formulae.

Learn double angle formulae through a concise visual explanation, guided mathematical reasoning and a worked example.

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9:16 vertical lesson space

01 / WHAT YOU WILL LEARN

Double angle formulae

Learn double angle formulae through a concise visual explanation, guided mathematical reasoning and a worked example.

02 / LESSON STRUCTURE
  • Visual explanation
  • Key mathematical idea
  • Worked example
  • Practice check