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

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

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

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

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

The value of (3+cot76^(@)cot16^(@))/(cot76^(@)+cot16^(@)) is

The value of cot5^(0)cot10^(0)......cot85^(@) is

Find the value of (cot25^(@)+cot55^(@))/(tan25^(@)+tan55^(@))+(cot55^(@)+cot100^(@))/(tan55^(@)+tan100^(@))+(cot100^(@)+cot25^(@))/(tan100^(@)+tan25^(@))