2019年春七年级数学下册第七章平面直角坐标系7.2坐标方法的简单应用7.2.1用坐标表示地理位置课件(新版)新人教版.pptx

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2019年春七年级数学下册第七章平面直角坐标系7.2坐标方法的简单应用7.2.1用坐标表示地理位置课件(新版)新人教版.pptx_第1页
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第七章 平面直角坐标系,7.2 坐标方法的简单应用,解:( 1 )略. ( 2 )行政楼( 3,3 ),实验楼( -3,0 ),综合楼( -4,-3 ),信息楼( 2,-2 ). ( 3 )略.,解:( 2 )根据题意得|+1|+|+4|+|+2|+|0|+|+1|+|-2|=10 m. ( 3 )略.,解:( 1 )北偏东40的方向上有两个目标:敌方战舰B和小岛.要想确定敌方战舰B的位置,还需要知道敌方战舰B距我方潜艇的距离. ( 2 )敌方战舰A和敌方战舰C. ( 3 )要确定每艘敌方战舰的位置,各需要两个数据:距离和方位角.,

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