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

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

A

`-1`

B

0

C

1

D

2

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The correct Answer is:
B
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(1) (1-tan^(2)45^(@))/(1+tan^(2)45^(@)) =

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

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

Evaluate log_(4)(1+tan^(2)45^(@))

What is the value of (tan^(2)25^(@))/(cosec^(2)65^(@))+(cot^(2)25^(@))/(sec^(2)65^(@))+tan20^(@)45^(@)tan70^(@) ?

tan(45^(@)+A)tan(45^(@)-A)=1

tan (45 ^ (@) + A) + tan (45 ^ (@) - A) =

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