Question
$\frac{1}{\sec \theta-\tan \theta}=\sec \theta+\tan \theta$
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| दूध $($लीटर$)$ | $1 - 3$ | $3 - 5$ | $5 - 7$ | $7 - 9$ | $9 - 11$ | $11 - 13$ |
| हॉटेलांची संख्या | $7$ | $5$ | $15$ | $20$ | $35$ | $18$ |

