Wednesday, April 21, 2010

Stephen's Reflection

Ok so this blog is about law of sines and cosines. You use this to find angles and sides of non right triangles.

When you have a non right triangle that has pairs, use the law of sines:

Sin A/a = Sin B/b= Sin C/c

*All you are doing is setting up a proportion.

**Remember to solve for an angle, you have to take the inverse.

*To solve a triangle with no angles, use the Law of Cosines:
(opp leg)^2= (adj leg)^2 + (other adj leg)^2 -2(adj leg)(adj leg) Cos(angle b/w)

I forget how to use steps for circles and ellipses and stuff like that

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