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OG详解-OG6 数学2 Q22

正确答案:B
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Choice B is correct. The Pythagorean theorem states that for a right triangle, c2 = a2 +b2, where c represents the length of the hypotenuse and a and b represent the lengths of the legs. It’s given that in triangle ABC, angle B is a right angle. Therefore, triangle ABC is a right triangle, where the hypotenuse is side AC and the legs are sides AB and BC. It’s given that the lengths of sides AB and BC are 10 37 and 2437 , respectively. Substituting these values for a and  b in the formula c2 = a2 +b2  yields c2 = (10 37)2 +(24 37)2 , which is equivalentChoice B is correct. The Pythagorean theorem states that for a right triangle, c2 = a2 +b2, where c represents the length of the hypotenuse and a and b represent the lengths of the legs. It’s given that in triangle ABC, angle B is a right angle. Therefore, triangle ABC is a right triangle, where the hypotenuse is side AC and the legs are sides AB and BC. It’s given that the lengths of sides AB and BC are 10 37 and 2437, respectively. Substituting these values for a and  b in the formula c2 = a2 +b2  yields c2 = (10 37)2 +(24 37)2 , which is equivalent to c2 = 100(37)+576(37), or c2 = 676(37). Taking the square root of both sides of this equation yields c = ±26 37 . Since c represents the length of the hypotenuse, side AC, c must be positive. Therefore, the length of side AC is 26 37.
Choice A is incorrect. This is the result of solving the equation c = 2437- 1037, not c2 = (1037 )2 +(2437)2 . Choice C is incorrect. This is the result of solving the equation c = 10 37 +2437, not c2 = (1037 )2 +(2437 )2 . Choice D is incorrect and may result from conceptual or calculation errors.
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