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Geometrical Interpretation

We assume side AC = b and AB = c. In addition, assume the unknown side BC = b lies along x - axis.

Case 00 < C < 900 :- In this case we may get one or two triangles or no triangle satisfying the data. Through C a straight line AC = b and angle between x-axis and AC be Ð C. Draw AD = h, perpendicular to x-axis. The various possibilities are described in the following table.

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3. 1 Solving Right Triangles
3. 2 Law of Cosines
3. 3 Law of Sines
3. 4 The Ambiguous Case of Law of Sines
3. 5 Areas of Triangles
Supplementary Problems

Chapter 4

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