单项选择题

下列事件过程的功能是：建立一个名为Data1的随机文件，存放角度值及这些角度的正弦函数值和余弦函数值，角度为1，2，3，…，90。请在空白处填入适当的内容，将程序补充完整( )。

Private Type Ang

K As Integer

Sinx As Single

Cosx As Single

End Type

Dim Ksc As Ang

Private Sub Form_Click()

Dim Y As Single

Dim i As Integer

Dim Ksc As Ang

Open______

Y=3.14159/180

For i=1 To 90

Ksc.K=i

Ksc.Sinx=Sin(i*Y)

Ksc.Cosx=Cos(i*Y)

Next i

Close #2

End Sub