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Question: problem 4 solve problem 16 ac on page 29 of...

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Problem 4: Solve problem 16 (a-c) on page 29 of Gilats book. Note that the law of sines produces two solutions since sin γ-sin(π-γ) . Use additional reasons to choose correct β and γ. 16. In the triangle shown a9 cm, b 18 cm, and c 25 cm. Define a, b, and c as variables, and then: (a) Calculate the angle a (in degrees) by substi- tuting the variables in the Law of Cosines. (Law of Cosines: c2a2+ b2 -2abcos) B (b) Calculate the angles B and y (in degrees) (c) Check that the sum of the angles is 180 using the Law of Sines.
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