MCQ
$\frac{{\cos 9^\circ + \sin 9^\circ }}{{\cos 9^\circ - \sin 9^\circ }} = $
- ✓$\tan 54^\circ $
- B$\tan 36^\circ $
- C$\tan 18^\circ $
- Dએકપણ નહિ.
$= \tan \,\left( {{{45}^o} + {9^o}} \right) = \tan {54^o}$.
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