Question: 16. In the triangle shown a 9 cm, b18 cm, and c 25 cm. Define a, b, and c as variables, and then: (a) Calculate

16. In the triangle shown a 9 cm, b18 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 : c2-a2 + b2-2abcos7) B/ b) Calculate the angles p and y (in degrees) using the Law of Sines. (c) Check that the sum of the angles is 180o

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