如图,要测量禁区内的楼房N的高度CD,可在禁区外的楼房M内选一点A,量出A离开地面的高度AB=20米,再用经纬仪测出∠CAD=,∠ACB=,则楼房N的高度CD为( )A.10√2米B.20(√6-√2)C.20(3-√3)D.20(√3+√2)
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![如图,要测量禁区内的楼房N的高度CD,可在禁区外的楼房M内选一点A,量出A离开地面的高度AB=20米,再用经纬仪测出∠CAD=,∠ACB=,则楼房N的高度CD为( )A.10√2米B.20(√6-√2)C.20(3-√3)D.20(√3+√2)](/uploads/image/z/10447080-24-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E8%A6%81%E6%B5%8B%E9%87%8F%E7%A6%81%E5%8C%BA%E5%86%85%E7%9A%84%E6%A5%BC%E6%88%BFN%E7%9A%84%E9%AB%98%E5%BA%A6CD%2C%E5%8F%AF%E5%9C%A8%E7%A6%81%E5%8C%BA%E5%A4%96%E7%9A%84%E6%A5%BC%E6%88%BFM%E5%86%85%E9%80%89%E4%B8%80%E7%82%B9A%2C%E9%87%8F%E5%87%BAA%E7%A6%BB%E5%BC%80%E5%9C%B0%E9%9D%A2%E7%9A%84%E9%AB%98%E5%BA%A6AB%3D20%E7%B1%B3%2C%E5%86%8D%E7%94%A8%E7%BB%8F%E7%BA%AC%E4%BB%AA%E6%B5%8B%E5%87%BA%E2%88%A0CAD%3D%2C%E2%88%A0ACB%3D%2C%E5%88%99%E6%A5%BC%E6%88%BFN%E7%9A%84%E9%AB%98%E5%BA%A6CD%E4%B8%BA%EF%BC%88++++++%EF%BC%89A.10%E2%88%9A2%E7%B1%B3B.20%28%E2%88%9A6-%E2%88%9A2%29C.20%283-%E2%88%9A3%29D.20%28%E2%88%9A3%2B%E2%88%9A2%29)
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