Digital ACT Math Practice Question #2020
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
Law of Cosines: c^2 = 8^2 + 9^2 - 2(8)(9)*cos(60°) -> c = sqrt(73).
By the Law of Cosines: c^2 = a^2 + b^2 - 2ab*cos(C) = 64 + 81 - 2(8)(9)*cos(60°). Solving gives c = sqrt(73)....
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