Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Proofs of sine rule, cosine rule, area of a triangle

Author:Ronald Max Griqua, Mr Hardman
Topic:Area, Cosine, Scalene Triangles, Sine, Trigonometry
Follow the proofs for the sine rule, cosine rule, and area of a triangle (GCSE/IGCSE)

New Resources

  • GeoGebra 3D Modeling Workshop (March 8 2024)
  • Graphing Basic and Compound Inequalities
  • Right Triangle Inscribed in a Semicircle
  • Congruent Sides & Angles in △s: Exploration
  • Basic and Compound Inequality Illustrator

Discover Resources

  • ΑΣΚΗΣΗ ΓΕΩΜΕΤΡΙΑΣ 16
  • Markers and Pens
  • Regular Hexagon Construction
  • tes 3t
  • Trikotna števila osnova

Discover Topics

  • Scatter Plot
  • Frequency Distribution
  • Tangent Function
  • Triangles
  • Step Functions
AboutPartnersHelp Center
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®