8. Let P{:tl,y1) be a paint an the curve 92 = 41:11:. This shape is called a parabola. The parabola and its tangent at point P are drawn on the diagram beluw. Let F(p,0) he a paint an the :e-axia. Let ,6 he the (acute) angle between y = y] and the tangent of the parabola. Let a be the {acute} angle between PP and the tangent {11' the parahnla. Shaw that a: = ,6