• sin600°+tan240°的值是试题及答案-单选题-云返教育

    • 试题详情

      sin600°+tan240°的值是         

      试题解答


      B
      sin600°+tan240°
      =sin(720°-120°)+tan(180°+60°)
      =-sin120°+tan60°
      =-
      +
      =

      故选B.
    MBTS ©2010-2016 edu.why8.cn