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Consider 三角形abc where ba =20/3^<1/2> bc=20 and 角abc= 拍/3 what is the maximum area of a rectangle in 三角形abc with one side of it parallel to bc? 積分sinh^-1 x ds -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 122.116.181.231