In \triangle ABC, the side lengths are $a = 42$ cm, $b = 71$ cm, and $c = 38$ cm. Determine the measure of the largest angle.\ Select one:\ a. $55^{\circ}$\ b. $100^{\circ}$\ c. $125^{\circ}$\ d. $145^{\circ}$
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The Law of Cosines states that in a triangle with side lengths a, b, and c, and opposite angles A, B, and C respectively, the following equation holds: c^2 = a^2 + b^2 - 2ab*cos(C) In this case, we are given the side lengths a = 42 cm, b = 71 cm, and c = 38 Show more…
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