\(\frac{{\cos 40^\circ \rm cosec50^\circ }}{{\tan 18^\circ \tan 40^\circ \tan 50^\circ \tan 60^\circ \tan 72^\circ }}\) equals
1
\(\frac{1}{{\sqrt 3 }}\)
2
\(\sqrt 3 \)
3
\(2\sqrt 3 \)
4
More than one of the above
5
None of the above
More than one of the above
None of the above