, 20^o , 10^o , 50^o is equal to - Vidyadip

MCQ

$\tan \,{20^o}\cot \,{10^o}\cot \,{50^o}$ is equal to

A
$\frac{1}{{\sqrt 3 }}$
✓
$\sqrt 3 $
C
$\frac{{\sqrt 3 }}{4}$
D
$4\sqrt 3 $

✓

Answer

Correct option: B.

$\sqrt 3 $

b
$\tan 20 . \tan 80 . \tan 40=\tan 3(20)=\sqrt{3} \mathrm{\,\,as}$

$\tan \theta \tan (60-\theta) \tan (60+\theta)=\tan 3 \theta$

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