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[" (iii) "(1-tan^(2)45^(@))/(1+tan^(2)45...

[" (iii) "(1-tan^(2)45^(@))/(1+tan^(2)45^(@))=],[[" (A) tan "90^(@)," (B) "1," (C) "sin45^(@)]]

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

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

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

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

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

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

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

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

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