试题与答案

已知点M(2,2)和N(5,-2),点P在x轴上,且∠MPN为直角,求P点坐标.

题型:解答题

题目:

已知点M(2,2)和N(5,-2),点P在x轴上,且∠MPN为直角,求P点坐标.

答案:

P点的坐标为(1,0)或(6,0).

设P点坐标为(a,0),kMP=,kNP=

∵kNP·kMP=-1,

,解得a=1或a=6,

∴P点的坐标为(1,0)或(6,0).

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