Evaluate `log_4(1+tan^2 45^@)`

The value of (1-tan^(2)45^(@))/(1+tan^(2)45^(@)) is

Evaluate the following: tan^2 60^@ + 2 tan^2 45^@ .

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

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

Value of (1-tan^(2)45^(@))/(1+ tan^(2)45^(@)) is

Evaluate (3 tan^2 30° + tan^2 60° + cosec 30° - tan 45°)/ cot^2 45°

Find the values of (2 tan^2 30^@)/(1-tan^2 30^@)+sec^2 45^@-cot^2 45^@-sec60^@ .