$\"\"$

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The ellipse equation is $\"\"$ .

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Rewrite the equation as $\"\"$ .

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The standard form of horizontal ellipse $\"\"$ .

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Eccentricity : $\"\"$ .

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$\"\"$

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First, determine the value of $\"\"$ .

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The ellipse equation is $\"\"$ .

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Compare the above equation with standard form of horizontal ellipse.

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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Consider $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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Find eccentricity by using the values of $\"\"$ and $\"\"$ .

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Eccentricity : $\"\"$ .

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Substitute the values $\"\"$ and $\"\"$ .

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Eccentricity :

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$\"\"$

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$\"\"$ .

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$\"\"$

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Eccentricity : $\"\"$ .