Staff

Please select a resource from the list below.

Quick Reference

• The sine rule and cosine rule
  This leaflet states the sine and cosine rules and gives examples of their use.

Teach Yourself

• Triangle formulae
  This unit explains the sine rule, cosine rule and formula for finding the area of a triangle.

Test Yourself

• Diagnostic Test - Triangle Formulae
• Exercise - Triangle Formulae

Video

A transcript of each video should be available in the Teach Yourself section above.

These videos require Windows Media Player (v10).

Please note: You may experience trouble with more recent upgrades to Internet Explorer (now v.7) and Media Player (now v.11). These no longer support streaming from the mms servers used by mathcentre, so we are recommending that you uninstall IE7 (IE6 lies underneath) and replace the new version of WMP with the fully functioning v.10 (you may need to find a download via google after uninstalling v.11). All those that have done this have reported back that everything is working again.

• Triangle formulae
  A common mathematical problem is to find the angles or lengths of the sides of a triangle when some, but not all, of these quantities are known. It is also useful to be able to calculate the area of a triangle from some of this information. (Mathtutor Video Tutorial)