" 16.The value of "(1-tan^(2)45)/(1+tan^(2)45)" is "

(1) (1-tan^(2)45^(@))/(1+tan^(2)45^(@)) =

(1 - tan^2 45^0)/(1 + tan^2 45^0)

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

Find the value of 45^@ of all trigonometrically ratios geometrically. and evaluate the following . (1- tan^(2)45^@)/(1+tan^(2)45^@)

If the value of (1+tan 1^(@))(1+ tan 2^(@)) (1+tan 3^(@)) ……….(1+ tan 45) Is 2^(lambda) , then the sum of the digits of the number lambda is

If A+B=45^(@), then the value of (1+tan A)(1+tan B) is

( 2tan 30 ^(@) )/( 1+tan ^(2) 45^(@) ) =

( 2tan 30 ^(@) )/( 1+tan ^(2) 45^(@) ) =

( 2tan 30 ^(@) )/( 1+tan ^(2) 45^(@) ) =