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.3.1_4.3.2空间直角坐标系空间两点间的距离公式情境导学素材新人教A版必修2.doc

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14.3.1-4.3.2 空间直角坐标系 空间两点间的距离公式【情境导学】数轴 Ox上的点 M,可用与它对应的实数来确定其位置;平面直角坐标平面上的点 M可以用一对有序实数(x,y)来确定其位置.那么,一架空中飞行的飞机的位置,该怎样确定呢?(1)只给出飞机所在位置的经度和纬度,能确定飞机位置吗?(不能)(2)如果不仅给出飞机位置的经度和纬度,再给出高度,能确定飞机的位置吗?(能)(3)在(2)的条件下,能求出飞机离出发点的距离吗?(能)

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