How would you use the cross product to derive the law of sines?(adsbygoogle = window.adsbygoogle || []).push({});

[tex] A \times B = |A||B| \sin \theta [/tex].

Law of sines: [tex] \frac{\sin A}{A} = \frac{\sin B}{b} = \frac{\sin C}{c} [/tex].

The cross product gives the area of the parallelogram formed by the vectors.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Law of Sines

**Physics Forums | Science Articles, Homework Help, Discussion**