n spherical coordinates ρ, θ, φ consider the surface S: ρ = 6cosec (φ). (a)Determine the equation corresponding to S in the Cartesian coordinates x1, x2, x3.  (b)Provide a sketch of the surface S on the axes ρ, θ, φ  (c)Provide a sketch of the surface corresponding to S obtained in (a) above, in cartesian coordinates x1, x2, x3

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