$\"\"$

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The trigonometric expression is $\"\"$ .

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Let $\"Syntax$ , then $\"\"$ .

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$\"\"$

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$\"\"$

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Apply pythagorean identity : $\"\"$ .

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$\"\"$

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Substitute the value $\"italic$ in above expression.

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

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The algebraic expression is $\"fraction$ .