If $Tan\theta $ = $\frac{9}{40}$, then $Sec\theta $ = ?

If $Tan\theta $ = $\frac{9}{40}$, then $Sec\theta $ = ?
1). $\frac{40}{41}$
2). $\frac{9}{41}$
3). $\frac{41}{40}$
4). $\frac{41}{9}$

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