6 lines
418 B
Markdown
6 lines
418 B
Markdown
|
The Law of Cosines is useful when solving for SAS or SSS triangles.
|
||
|
|
$$ a^2 = b^2 + c^2 -2bc\cos(\alpha) $$
|
||
|
|
$$ b^2 = a^2 + c^2 -2ac\cos(\beta) $$
|
||
|
|
$$ c^2 = a^2 + b^2 -2ab\cos(\gamma) $$
|
||
|
|
- When using the Law of Cosines to solve for SSS triangles, start solving for the largest angle.
|
||
|
|
- When correctly solved, the smallest angle will be opposite the smallest side, and the largest angle will be opposite the largest side.
|