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

A way to prove tg(2x)=(2tg(x))/(1-tg^2x)

Author:Ali Jradi
Topic:Trigonometry

New Resources

  • רישום חופשי
  • General Polar Equation of Conics with Rotation (2)
  • 巧算長方形周界
  • Parallel Lines and Angles: Thinking Classroom Exploration
  • Parallel Lines & Related Angles: Quick Reminders

Discover Resources

  • Rigid Motions: Question 5
  • Rotate a line 180
  • Math IA
  • Polygons: Convex vs. Concave
  • Derivative of a Vector-valued Function

Discover Topics

  • Tangent Function
  • Geometry
  • Line Segment
  • Intersection
  • Upper and Lower Sum or Riemann Sum
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®