下图中n点为北极点地球表面abc三地的太阳高度为0°c点经度为90°e此时某同学在c点正南3330km处观察到北极星的仰角为40 Template




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tomski下图中n点为北极点地球表面abc三地的太阳高度为0°c点经度为90°e此时某同学在c点正南3330km处观察到北极星的仰角为40 coloring