$\"\"$

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The equation is $\"\"$ .

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Rewrite the above equation $\"\"$ .

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Compare the above equation with polar equation of conic $\"\"$ .

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Here $\"\"$ and $\"\"$ .

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Since $\"\"$ , the equation is parabola.

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The directrix of the parabolais $\"\"$ .

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The general equation of parabola in rectangular form : $\"\"$ .

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The directrix of the parabola occur when $\"\"$ .

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in the above equation.

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$\"\"$

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The vertex lies at polar coordinate $\"\"$ correspond to rectangular coordinates $\"\"$ .

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The parabola’s vertex is $\"\"$ .

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The distance between the vertex $\"\"$ to the focus $\"\"$ is $\"\"$ .

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Substitute corresponding values in the general equation of parabola.

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$\"\"$

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$\"\"$

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The equation of parabola is $\"\"$ .

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$\"\"$

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The equation of parabola is $\"\"$ .