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Sine and Cosine Rules

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sine and cosine rules
Description

By the end of this unit, students will be able to:

  • understand and apply the sine rule;
  • understand and apply the cosine rule;
  • find unknown lengths and angles in triangles using both rules.

Key Stage 4: Geometry and Measures

  • {know and apply the sine rule, a/sinA = b/sinB = c/sinC , and cosine rule, a2 = b2 + c2 – 2bc cos A, to find unknown lengths and angles}
  • Age: 15-16
  • England & Wales: Year 11
  • Scotland: Senior 4
  • Rep. Ireland: Transition Year
  • Australia: Grade 10
  • USA: Grade 10
  • Three-part Lesson
  • Self-marking Activities
  • Fluency, Reasoning and Problem-solving Questions.
  • Engaging Drag and Drop Activities
  • Interactive Self-marking Worksheet
  • Printable Worksheets to Consolidate Learning

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