Find `(1+tan^(2)(45^(@)-A))/(1-tan^(2)(45^(@)-A))`

Evaluate : (2 tan 22 (1^(@))/( 2 ))/(1 - tan ^(2) 22 (1^(@))/( 2))

(1-tan^2 45^@)/(1+tan^2 45^@) is equal to

Find the value of : tan^(2)30^(@)+tan^(2)45^(@)+tan^(2)60^(@)

Find the value of (tan^(2)37(1)/(2)^(@)+1)/(tan^(2)37(1)/(2)^(@)-1) .

Find the vlaue of (2tan30^(@))/(1-tan^(2) 30^(@)) .

Show that : 2tan^(2)60^(@)-6(sin^(2)45^(@)-tan^(2)30^(@))=5

Evaluate: cos^(2)25^(@)-sin^(2)65^(@)-tan^(2)45^(@)

If (1+tan1^(@)) *(1+tan2^(@))*(1+tan3^(@)) …….(1+tan45^(@)) = 2^(n) , then 'n' is equal to :

Evaluate : (cos^(2)(45^(@) + theta)+ cos^(2) (45^(@) -theta))/(tan(60^(@) + theta) xx tan(30^(@) - theta))+(cot30^(@) + sin 90^(@))xx (tan60^(@) -sec0^(@))

Find the value of : 3sin^(2)30^(@)+2tan^(2)60^(@)-5cos^(2)45^(@)