## Class/Course - Class XII

### Subject - Math

#### Chapter - Inverse Trigonometric Functions

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Q.1 The value of $cot\left (\sum_{n=1}^{23}cot^{-1}\left (1 + \sum_{k = 1}^{n}2k \right ) \right )$ is | |

$\frac{23}{25}$ | |

$\frac{25}{23}$ | |

$\frac{23}{24}$ | |

$\frac{24}{23}$ | |