Law of Sines

Pronunciation: /lɔ ʌv saɪnz/ Explain

The law of sines relates the angles of a triangle to the length of the opposite sides: sin(a)/a=sin(b)/b=sin(c)/c

When the measures of two angles and a side are known, the law of sines provides a way to calculate the other sides and the remaining angle. This is called triangulation.

Click on the blue points and drag them to change the figure.

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Manipulative 1 - Law of Sines Created with GeoGebra.

More Information

  • McAdams, David E.. Triangle. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 8/31/2018. http://www.allmathwords.org/en/t/triangle.html.

Cite this article as:

McAdams, David E. Law of Sines. 8/31/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/l/lawofsines.html.

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Revision History

8/31/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
8/28/2018: Initial version. (McAdams, David E.)

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