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Find the vectors T, N, and B at the given point.
r(t) = <3cost,3sint,3lncost> (3,0,0)
Let C be the curve defined by the vector equation r(t)= <3sint, 3cost, 4t>.
(a) Find the parametric equations of the tangent line and equation of the normal plane to the curve at the point (0,3,0).
(b) Find the curvature at this point.