The value of `cot41^(@).cot42^(@).cot47^(@).cot48^(@).cot49^(@)`.

The value of cot41^(@).cot42^(@).cot43^(@).cot44^(@).cot45^(@).cot46^(@).cot.47^(@).cot48^(@).cot49^(@)

Find the value of cot10^(@).cot20^(@).cot60^(@).cot70^(@).cot80^(@) .

Find the value of cot15^(@).cot30^(@).cot45^(@).cot60^(@).cot75^(@)

The value of cot36^(@)cot72^(@), is

The value of cot36^(@)cot72^(@), is

The value of cot 36^(@)cot 72^(@) is-

The value of (cot25^(@)cot35^(@)+cot95^(@)cot145^(@)+cot85^(@)cot155^(@)) is equal

The value of cot 5^(@).cot 10^(@).cot 15^(@)……cot 85^(@) is

The value of cot5^(@)*cot15^(@)* cot 25^(@)* cot 35^(@)* cot45^(@) * cot 55^(@) * cot65^(@) * cot 75^(@) * cot 85^(@) is ________