Question

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

• A. 0
• B. 1
• C. $\frac{1}{2}$
• D. -1

Answer 1

Answer: (B)

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