Graphing formulas woth continuous variables

Hello

I need to graph a function of SIN(X),

I did it by writing my x-values in one column with small steps between each value and then calculating the sin(x) value in the column next to it and then graphing the two columns.

But this raquires a lot of space on the spreadsheat and it would be convenient to be able to write it on the form

y=sin(x)

having x defined as a continuous variable. and then plotting the graph

Thanks
/Arvid