Triangle Completer

Complete all sides and angles of a triangle using trigonometry

Triangle Completion

Enter at least two measures of the triangle and this page will complete the rest using trigonometry and Pythagoras.
Angles (clear values) Sides (clear values)
α a = BC
β b = AC
γ90° c = AB

Entering your input

  • Just enter numbers – no units
  • Angles are in degrees. Any angles exceding 89 will be ignored.
  • Angles exceeding 89 will be ignored
  • Side c must be the longest side (please see image below for definitions)