The value of ,$\sqrt 3 \, cosec\, 20^o - sec\, 20^o $ is :
The value of ,$\sqrt 3 \, cosec\, 20^o - sec\, 20^o $ is :
- A
$2$
- B
$\frac{{2\,\sin \,20^\circ }}{{\sin \,40^\circ }}$
- C
$4$
- D
$\frac{{4\,\sin \,20^\circ }}{{\sin \,40^\circ }}$
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