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  4. The value of tan 1° tan 2° tan 3° ldots ldots ldots ldots . . tan 89° is

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Q. The value of $\tan 1^{\circ} \tan 2^{\circ} \tan 3^{\circ} \ldots \ldots \ldots \ldots . . \tan 89^{\circ}$ is

KCETKCET 2021Trigonometric Functions

Solution:

$\tan \theta \cdot \cot \theta=1$