Wednesday, January 27, 2010

Law of Sines- 1/27/10


In class today, we took notes on the Law of Sines. This formula allows you to solve for the rest of a triangle if you already know an angle, angle, and a side (AAS), or if you know a side, side, and an angle (SSA). This formula allows you to solve for the unknowns of all triangles as long as you have enough given information. When you have an AAS triangle, there is one possible solution, but with SSA triangles, you can have 0, 1, or even 2 possible solutions, so it is important to check if triangle even exists.

The basic formula for the Law of Sines is:

 (a/sinA) = (b/sinB) = (c/sinC) 

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