$\"\"$

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The given information is $\"\"$ .

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Use the reciprocal identity to find the value of $\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$

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From the pythagorean identity $\"\"$ .

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$\"\"$

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$\"\"$

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Therefore $\"\"$ and $\"\"$ is positive.

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$\"\"$ .

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$\"\"$

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$\"\"$ .

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