default
{
    state_entry()
    {
        llOwnerSay("Calculate the slope given the angle. Please say the angle in chat.");
        llListen(0, "", llGetOwner(), "");
    }

    listen(integer chan, string name, key id, string msg)
    {
        float angle = (float)msg * DEG_TO_RAD;
        llOwnerSay("For an input angle of " + msg + ", you climb "
                   + (string)llTan(angle) + " m per each horizontal m");
    }
}