Law of Cosines: Difference between revisions
Mathgeek2006 (talk | contribs) No edit summary |
edited TeX to include \cos function |
||
| Line 1: | Line 1: | ||
The '''Law of Cosines''' is a formula used in finding lengths and angles of a triangle. For sides a, b, and c with opposite angles A, B, and C respectively: | The '''Law of Cosines''' is a formula used in finding lengths and angles of a triangle. For sides a, b, and c with opposite angles A, B, and C respectively: | ||
<math>c^2 = a^2 + b^2 - | <math>c^2 = a^2 + b^2 - 2ab\cos C</math> | ||
Revision as of 20:21, 21 June 2006
The Law of Cosines is a formula used in finding lengths and angles of a triangle. For sides a, b, and c with opposite angles A, B, and C respectively:
