如图,在正方形ABCD中,N为DC的中点,M为AD上异于 D的点,且∠NMB=∠MBC,则tan∠ABM= .如图,在正方形ABCD中,N为DC的中点,M为AD上异于D的点,且∠NMB=∠MBC,则tan∠ABM= .
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![如图,在正方形ABCD中,N为DC的中点,M为AD上异于 D的点,且∠NMB=∠MBC,则tan∠ABM= .如图,在正方形ABCD中,N为DC的中点,M为AD上异于D的点,且∠NMB=∠MBC,则tan∠ABM= .](/uploads/image/z/1132845-69-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E4%B8%AD%2CN%E4%B8%BADC%E7%9A%84%E4%B8%AD%E7%82%B9%2CM%E4%B8%BAAD%E4%B8%8A%E5%BC%82%E4%BA%8E+D%E7%9A%84%E7%82%B9%2C%E4%B8%94%E2%88%A0NMB%EF%BC%9D%E2%88%A0MBC%2C%E5%88%99tan%E2%88%A0ABM%EF%BC%9D%E3%80%80%E3%80%80%E3%80%80%E3%80%80%E3%80%80%E3%80%80%E3%80%80%EF%BC%8E%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E4%B8%AD%2CN%E4%B8%BADC%E7%9A%84%E4%B8%AD%E7%82%B9%2CM%E4%B8%BAAD%E4%B8%8A%E5%BC%82%E4%BA%8ED%E7%9A%84%E7%82%B9%2C%E4%B8%94%E2%88%A0NMB%EF%BC%9D%E2%88%A0MBC%2C%E5%88%99tan%E2%88%A0ABM%EF%BC%9D%E3%80%80%E3%80%80%E3%80%80%E3%80%80%E3%80%80%E3%80%80%E3%80%80%EF%BC%8E)
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