Fun plotting a circle in the console

CircPlotter.fs

open System

let R = 18

let H = R * 2

let setDisplayPosition (x, y) =
    try
        Console.SetCursorPosition(x, y)
    with
        | :? ArgumentOutOfRangeException -> printfn "Attempted to set cursor out of range!"

let prepDisplay =
    Console.Clear()
    setDisplayPosition(0, 0)

let closeDisplay = setDisplayPosition(0, H * 2) // TODO figure out why the console truncates the 'circle'

let T d = d * Math.PI / 180.00

let coord t (f: double -> double) = H + Convert.ToInt32((double R) * f(t))

let X t = coord t Math.Cos
let Y t = coord t Math.Sin

let coords d = X(T(d)), Y(T(d))

let circCoords = [1..360] |> List.map (fun d -> coords(d))

let plot (x, y) =
    setDisplayPosition(x, y)
    Console.Write('*')

let plotCirc =
    prepDisplay
    circCoords |> List.iter (fun (x, y) -> plot(x, y))
    closeDisplay

plotCirc

Need to work out why the F# version truncates the circle whereas the C# version does not.