$\"\"$

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The trigonometric expression is $\"Syntax$ .

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

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Substitute $\"\"$ in the trignometric expression.

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$\"\"$

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$\"Syntax$

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Apply trignometric identity: $\"italic$ .

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$\"italic$

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Substitute $\"italic$ in above function.

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$\"italic$

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$\"italic$ .

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Substitute $\"Syntax$ in the above equation. \ \

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$\"\"$

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$\"\"$

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The algebraic expression is $\"square$ .