MCQ
$\frac{{\sin {{81}^o} + \cos {{81}^o}}}{{\sin {{81}^o} - \cos {{81}^o}}}$=
- A$cot9^o$
- B$tan9^o$
- C$cot54^o$
- ✓$tan54^o$
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$(S1):$ $2023^{2022}-1999^{2022}$ એ $8$ વડે વિભાજ્ય છે.
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