Prove that at the point of intersection of the surfaces x² + y² = z², z = a_tan` (*) vhere y = x tan 0, the radius of curvature and torsion are given by a(2+0²) ³/2 (8+50+0¹) ¹/2 p = and o = a (8+50² +0¹) 6+0²

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