数学PS-752yuk

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Each side of a certain parallelogram has length 6. if the area of the parallelogram is 18. which of the following is the measure of one of its angles?

  • A30°
  • B45°
  • C60°
  • D90°
  • E120°
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正确答案:A
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当前版本由Adam8648更新于2013-10-16 10:21:04

感谢由Adam8648用户对此题目的解答所做出的贡献。

菱形的面积=两对角线之积的一半=变长的平方乘以夹角的正弦

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