Hey bungouk.
Try doing a fill down of x-values and then use a formula in another column to generate the values.
You should be able to then take the function values and plot them in Excel.
Plot the function Y = 20 tan (x – 20) over a 360^{0} interval. Ensure both your axis are clearly labelled and that the graph is appropriately sized and titled. Produce tables to generate all of the coordinates for both functions at 5^{o} to 10^{ o} intervals.
Could someone tell me how to plot this and how to plot in Microsoft excel