1.

The locus of the point (r sec alpha cos beta, r sec alpha beta, r tan alpha) is

Answer»

`x^(2)+y^(2)-Z^(2) = R^(2)`
`x^(2)+y^(2)+z^(2) = r^(2)`
`x^(2)+y^(2)-z^(2) = r^(2)`
`x^(2)-y^(2)+z^(2) = r^(2)`

Answer :C


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