The value of \[\mathbf{cot 5{}^\circ }\mathbf{.cot 15{}^\circ }\mathbf{.cot}\text{ }\mathbf{25{}^\circ }\mathbf{.cot 35{}^\circ }\mathbf{.cot45}{}^\circ \]\[\mathbf{.cot 55{}^\circ }\mathbf{.cot}\mathbf{.65{}^\circ }\mathbf{.cot 75{}^\circ }\mathbf{.cot 85{}^\circ }\]is _____.

The value of \[\mathbf{cot 5{}^\circ }\mathbf{.

1.	The value of \[\mathbf{cot 5{}^\circ }\mathbf{.cot 15{}^\circ }\mathbf{.cot}\text{ }\mathbf{25{}^\circ }\mathbf{.cot 35{}^\circ }\mathbf{.cot45}{}^\circ \]\[\mathbf{.cot 55{}^\circ }\mathbf{.cot}\mathbf{.65{}^\circ }\mathbf{.cot 75{}^\circ }\mathbf{.cot 85{}^\circ }\]is _____.
A.	\[\sqrt{3}\]
B.	\[\frac{1}{\sqrt{3}}\]
C.	1
D.	\[2\sqrt{3}\]
E.	None of these
Answer» D. \[2\sqrt{3}\]

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The value of \[\mathbf{cot 5{}^\circ }\mathbf{.cot 15{}^\circ }\mathbf{.cot}\text{ }\mathbf{25{}^\circ }\mathbf{.cot 35{}^\circ }\mathbf{.cot45}{}^\circ \]\[\mathbf{.cot 55{}^\circ }\mathbf{.cot}\mathbf{.65{}^\circ }\mathbf{.cot 75{}^\circ }\mathbf{.cot 85{}^\circ }\]is _____.

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