Presentation is loading. Please wait.

Presentation is loading. Please wait.

The Law of Cosines February 25, 2010.

Similar presentations


Presentation on theme: "The Law of Cosines February 25, 2010."— Presentation transcript:

1 The Law of Cosines February 25, 2010

2 Solving Oblique Triangles
Solving a triangle means finding the lengths of all the sides and the measures of all the angles. This problem requires that we know three of the sides or angles.

3 The Law of Sines We use the Law of Sines if we know:
Two angles and any side (AAS or ASA) One angle and two sides, where one of the sides is opposite the known angle (SSA)

4 Law of Cosines We use the Law of Cosines if we know:
One angle and its two adjacent sides (SAS) All three sides (SSS)

5 Questions What about AAA?
On page 612, why are there “Alternative Forms” of the Law of Cosines? Do we really need three equations for the Law of Cosines?

6 Homework Page 617, 1 – 7 (odd)


Download ppt "The Law of Cosines February 25, 2010."

Similar presentations


Ads by Google