need help rotating a minimap?

Alright so i have a minimap and it gives the distances and placements correctly but then i added a roation method using an earlier post and it is behaving very weirdly like half working i guess anyway the math is well above me so could someone explain it and help me out

here is the code that i have so far

local sx, sy, sz, m00, m01, m02, m10, m11, m12, m20, m21, m22 = head.CFrame:components()
heading = math.atan2(m02, m22)

local rotMod = rot(Vector2.new(75, 75), f.AbsolutePosition, heading)
f.Position = f.Position + UDim2.new(0, rotMod.x, 0, rotMod.y)

function rot(center, point, deg)
    point = (point - center)
    local point_c = point
    local len = point.magnitude
    point = point.unit
    local rad = math.atan2(point.y, point.x)+ deg
    point = Vector2.new(math.cos(rad), math.sin(rad))*len
    return (point-point_c)
end