`(1+tan^(2)60^(@))^(2)=`

If (1-tan^(2)60^(@))/(1+tan^(2)60^(@))=cosX , then the value of X is ___________

Evaluate : (3tan25^(@)tan40^(@)tan50^(@)tan65^(@)-(1)/(2)tan^(2)60^(@))/(4(cos^(2)29^(@)+cos^(2)61^(2)))

Evaluate : (3tan25^(@)tan40^(@)tan50^(@)tan65^(@)-(1)/(2)tan^(2)60^(@))/(4(cos^(2)29^(@)+cos^(2)61^(2)))

Value of (2 tan^(2) 60^(@))/(1 + tan^(2) 30^(@)) = _________.

If (2tan60^(@))/(1+tan^(2)60^(@))=cos(X) , then the value of X is

Choose the correct option and justify your choice :(i)(2tan30^(@))/(1+tan^(2)30^(@))(a)sin60^(@)(b)cos60^(@)(c)tan60^(@)(d)sin30^(@)

(kcosec^(2)30^(@).sec^(2)45)/(8cos^(2)45^(@).sin^(2)60^(@))=tan^(2)60^(@)-tan^(2)30^(@) , then k = ?

Prove that : (2tan^(2)30^(@))/(1-tan^(2)30^(@))+sec^(2)45^(@)-cot^(2)45^(@)=sec60^(@) .

If (2tan^(2)30^(@))/(1-tan^(2)30^(@))+sec^(2)45^(@)-sec^(2)0^(@)=xsec60^(@) , then the value of x is

(2tan60^(@))/(1+tan^(2)60^(@)) is equal to :