jee-main 2023 Q69

jee-main · India · session2_06apr_shift2 Addition & Double Angle Formulae Simplification of Trigonometric Expressions with Specific Angles

The value of $\tan 9^{\circ} - \tan 27^{\circ} - \tan 63^{\circ} + \tan 81^{\circ}$ is $\_\_\_\_$.

The value of $\tan 9^{\circ} - \tan 27^{\circ} - \tan 63^{\circ} + \tan 81^{\circ}$ is $\_\_\_\_$.