Let , , and be the lengths of the Legs of a Triangle opposite Angles , , and .
Then the law of sines states that

(1) |

(2) |

(3) |

(4) |

(5) |

The law of sines for oblique Spherical Triangles states that

(6) |

**References**

Abramowitz, M. and Stegun, C. A. (Eds.).
*Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing.*
New York: Dover, p. 79, 1972.

Beyer, W. H. *CRC Standard Mathematical Tables, 28th ed.* Boca Raton, FL: CRC Press, p. 148, 1987.

Coxeter, H. S. M. and Greitzer, S. L. *Geometry Revisited.* Washington, DC: Math. Assoc. Amer., pp. 1-3, 1967.

© 1996-9

1999-05-26