题目

如图,在平面直角坐标系中,是坐标原点,在中,于点,点在反比例函数的图象上,若OB=4,AC=3,则的值为__________. 答案:【答案】6【解析】由等腰三角形的性质可得C点坐标,结合AC长即可得到A点坐标,进而可得k值.∵AO=OB∴△AOB为等腰三角形又∵AC⊥OB∴C为OB中点∵OB=4,AC=3∴C(2,0),A(2,3)将A点坐标代入反比例函数得,3=∴k=6故答案为:6.Most people find it hard to ________Beijing Opera to foreigners because of cultural differences.A.get acrossB.get overC.come acrossD.come over
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