$\"\"$

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The trigonometric expression is $\"\"$ .

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Rewrite the expression as $\"\"$ .

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Write the above expression with common denominator.

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$\"\"$

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Apply reciprocal identity : $\"\"$ .

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Pythagorean identity : $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ .