Triangle Completer

Complete all sides and angles of a triangle using trigonometry

Triangle Completion

Enter what you know about a triangle and it'll complete it for you, using Pythagoras and trigonometry.
α a = BC
β b = AC
γ90 ° c = AB

Entering your input

  • Angles and sides may not have units - just enter the numbers!
  • Angles must be in degrees (e.g. 84° - and just enter 84)
  • Angles exceeding 89 will be ignored
  • Angles and sides may have decimals, but only with a point (e.g. 24.56 works, 45,32 doesn't.)
  • Side c must be the longest side (please see image below for definitions)
  • Any wrong input will be ignored.