$\"\"$

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Evaluate $\"\"$ .

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$\"\"$

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$\"\"$

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Let $\"\"$ then $\"\"$ .

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$\"\"$

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Integration formula for inverse trigonometric function : $\"\"$ .

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$\"\"$

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

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$\"\"$

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$\"\"$

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$\"\"$ .