\"\"

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The algebraic expression is \"\" and \"\".

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Consider \"\".

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Substitute \"\" in above expression. \ \

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\"\"

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\"\"

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\"\"

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Apply Pythagorean identity : \"\".

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\"\"

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\"\".                           (Since \"\")

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Thus, the trigonometric function is \"\".\"\"

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The trigonometric function is \"\".