9Please answer it asap

9. (5+5+5+5) (a) Find parametric equations for the tangent line to the curve x(t) = e-Cost, y(t) = e Sint, z(t) = ett at the point (1, 0, 1). (b) Find the length and the curvature of the curve r(t) = Sinti-Costi+th. (c) Let r(t) = (5Sint, t, 5Cost). Find the unit normal vector N and the Binormal vector B at any t. (d) Write the equation of Osculating plane for the curve in part (c) at the point (0, 0, 5)