$\"\"$

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The integration function is $\"\"$ .

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$\"\"$

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Apply Pythagorean identities $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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Let $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute the values in integral : $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ $\"\"$ .