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            • 1.

              直线\(x{-}y\sin\alpha{-}3{=}0(\alpha{∈}R)\)的倾斜角的取值范围是______.

            • 2.
              若点\(A(4,0)\)与点\(B(0,2)\)关于直线\(l\)对称,则直线\(l\)的斜率为 ______ .
            • 3.
              直线\(y=x+ \sqrt {3}\)的倾斜角是\((\)  \()\)
              A.\(30^{\circ}\)
              B.\(45^{\circ}\)
              C.\(60^{\circ}\)
              D.\(135^{\circ}\)
            • 4.
              已知\(A(-1,4)\)、\(B(3,0)\),则直线\(AB\)的倾斜角为\((\)  \()\)
              A.\(45^{\circ}\)
              B.\(60^{\circ}\)
              C.\(120^{\circ}\)
              D.\(135^{\circ}\)
            • 5.
              直线\( \sqrt {3}x-y+3=0\)的倾斜角是\((\)  \()\)
              A.\(30^{\circ}\)
              B.\(45^{\circ}\)
              C.\(60^{\circ}\)
              D.\(150^{\circ}\)
            • 6.
              直线\(3x+ \sqrt {3}y+1=0\)的倾斜角是\((\)  \()\)
              A.\(30^{\circ}\)
              B.\(60^{\circ}\)
              C.\(120^{\circ}\)
              D.\(150^{\circ}\)
            • 7.
              直线\(x+ \sqrt {3}y+c=0\)的倾斜角为 ______ .
            • 8.
              过\(A(0,1)\),\(B(3,5)\)两点的直线的斜率是\((\)  \()\)
              A.\( \dfrac {4}{3}\)
              B.\( \dfrac {3}{4}\)
              C.\(- \dfrac {4}{3}\)
              D.\(- \dfrac {3}{4}\)
            • 9.
              已知直线的倾斜角的范围是\(a∈[ \dfrac {π}{4}, \dfrac {π}{2}]\),则此直线的斜率\(k\)的取值范围是 ______ .
            • 10.
              直线\(x-y+3=0\)的倾斜角是\((\)  \()\)
              A.\(30^{\circ}\)
              B.\(45^{\circ}\)
              C.\(60^{\circ}\)
              D.\(135^{\circ}\)
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