Consider the parabola y2=8x . Let Δ1 be the area of the triangle formed by the end points of its latusrectum and the point P(21,2) on the parabola
\nand Δ2 be the area of the triangle formed by drawing tangent at P and at the end points of the latusrectum.
\nThen, Δ2Δ1 is