Review for Right Triangle Trigonometry

Note: The cosine rule is used to solve a triangle when it is given . three sides, or. two sides and the included angle. Example 2.1. In triangle ABC, a = 6.5cm, b = 5 cm and c = 7 cm. Calculate all the angles of the triangle. [630 ,430, 740 ] Solution Example 2.2. Given that ABC is a triangle in which a = 15 cm, b = 10 cm and c = 7 cm, find ... ................
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