" If "`Tan35^(0)=k`Then the value of "`Tan145^(0)-Tan125^(@))/(1+Tan145^(@)Tan125^(@))`

If Tan35^(0)=k , Then the value of (Tan145^(0)-Tan125^(0))/(1+Tan145^(0)Tan125^(0))= (A) (2k)/(1-k^(2)), (B) (2k)/(1+k^(2)) (C) (1-k^(2))/(2k), (D) (1-k^(2))/(1+k^(2))

If tan25^(0)=a, then the value of (tan205^(@)-tan115^(0))/(tan245^(0)+tan335^(@)) in terms of 'a' is

tan(100^(@))+tan(125^(@))+tan(100^(@))tan(125^(@))=

The value of tan (1^(0))+tan(89^(@)) is

Value of tan25^(@)tan35^(@)tan45^(@)tan55^(@)tan65^(@) is

The value of (tan 47^(@) + tan 43^(@))/(1-tan 47^(@) tan 43^(@)) is

The value of (tan10^(@)+tan35^(@))+tan10^(@)tan35^(@) is

The value of (tan 1^(@) tan 2^(@) tan 3^(@) … tan 89^(@) ) is