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

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

A

`oo`

B

0

C

1

D

`sqrt3`

Verified by Experts

The correct Answer is:

B

(1-tan^2 45^@)/(1+tan^2 45^@)=?
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(1 + tan ^ (2) (45-A)) / (1-tan ^ (2) (45-A)) = cos ec2A
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(1 + tan ^ (2) (45 ^ (@) - A)) / (1-tan ^ (2) (45 ^ (@) - A)) = csc2A
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(1-tan^(2)(45^(@)-A))/(1+tan^(2)(45^(@)-A)) is equal to
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(1- tan^(2) (45^(@)-A))/(1+tan^(2)(45^(@)=A)) =sin 2A
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The value of (1-tan^(2)45^(@))/(1+tan^(2)45^(@)) is
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( 1 - tan ^ 2 45^@ ) /( 1 + tan ^2 45 ^@ ) = ?
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(1+tan^(2)45^(@))/(1+tan^(2)45^(@))=…..
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(1) (1-tan^(2)45^(@))/(1+tan^(2)45^(@))=
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