Show that:` cot16^@*cot 44^@+cot44^@*cot76^@-cot76^@*cot16^@=3`

Show that: cot x-cot2x=2

cot16cot44+cot44cot76-cot76cot16=

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

cot16^(0)cot44^(0)+cot44^(0)cot76^(0)-cot76^(0)cot16^(0)=(a)1(b)2(c)3(d)4

What is the value of cot35^@ cot40^@ cot45^@ cot50^@ cot55^@ ? cot35^@ cot40^@ cot45^@ cot50^@ cot55^@ का मान क्या है ?

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

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

Show that cot 2x cot x - cot 3x cot 2x -cot x=1

Show that: (cot 30^(@) cot 60^(@) - 1)/(cot 30^(@) + cot 60^(@)) = cot 90^(@)