$\"\"$

The polar equation is $\"\"$ .

Rewrite the expression.

$\"\"$

Trigonometric formula : $\"\"$ .

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Substitute $\"\"$ .

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The graph of this equation is a vertical line at $\"\"$ .

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Evaluate the function for several values of $\"\"$ in its domain and use this points to graph the function.

Graph :

(1) Draw the coordinate plane.

(2) Graph the function $\"\"$ . \ \

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The rectangular equation is $\"\"$ .

Graph of the function $\"\"$ is \ \

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