Todd Helmenstine

About Todd Helmenstine

Todd Helmenstine is the physicist/mathematician who creates most of the images and PDF files found on Nearly all of the graphics are created in Adobe Illustrator, Fireworks and Photoshop. Todd also writes many of the example problems and general news articles found on the site.

Law of Cosines Example
The law of sines is a useful rule showing a relationship between an angle of a triangle and the length of the side opposite of the angle. These two example problems show how to use this law to find angles and sides of a triangle.

Law of Sines Example Problem