Question: In order to make a precise cut from point Q to point S using a saw, Alfonso needs to know the angle measure for the

In order to make a precise cut from point Q to point S using a saw, Alfonso needs to know the angle measure for the angle whose vertex is S. Based on the diagram below, which equation could Alfonso use to determine the measure of angle S? In triangle Q R S, the lengths of sides Q R, Q S, and S R are 10 inches, 9 inches, and 11 inches respectively. The figure is not drawn to scale. 9mc015-2.jpg = 10mc015-3.jpg + 11mc015-4.jpg - 2(10)(11)cosS 10mc015-5.jpg = 9mc015-6.jpg + 11mc015-7.jpg - 2(9)(11)cosS 9mc015-8.jpg = 10mc015-9.jpg + 11mc015-10.jpg + 2(10)(11)cosS 10mc015-11.jpg = 9mc015-12.jpg + 11mc015-13.jpg + 2(9)(11)cosS

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