`cot12^(@)*cot 24^(@)*cot28^(@)*cot32^(@)*cot48^(@)*cot88^(@)=……..`

cot12^(@)cot102^(@)+cot102^(@)cot66^(@)+cot66^(@)cot12^(@) =

cot10^(@)cot20^(@)cot60^(@)cot70^(@)cot80^(@)=

Show that: cot16^(@)*cot44^(@)+cot44^(@)*cot76^(@)-cot76^(@)*cot16^(@)=3

Show that, cot 1^(@), cot 2^(@) cot 3^(@).....cot 87^(@) cot 88^(@) cot 89^(@) = 1

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

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

Show that, cot16^(@) cot44^(@) + cot44^(@) cot76^(@) + cot76^(@) cot 16^(@) = 3

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

cot 16^(@) cot 44^(@) + cot 44^(@) cot 76^(@) - cot 76^(@) cot 16^(@)=