Find the value of ${tan}^{- 1} (1)$

60^{\circ}

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45^{\circ}

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30^{\circ}

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90^{\circ}

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Solution

The correct option is D $45^{\circ}$
${tan}^{- 1} (1)$
$= {tan}^{- 1} (tan \frac{π}{4})$
$= \frac{π}{4}$
$= 45^{o}$

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