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

(1-tan^(2)45^(@))/(1+tan^(2)45^(@))=(A)tan 90^(@)(B)1(C)sin45^(@)(D)0 | 10 | त्रिकोणमिति का परिच...

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

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

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

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

(1-tan^(2)45)(1+tan^(2)45)= a) tan90^0 b)1 c) sin45^0 d)0

(1-tan^(2)45o)/(1+tan^(2)45o) is equal to tan90o(b)1(c)sin450(d)sin0o

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

tan225^(@)=tan(180^(@)+45^(@)) =tan45^(@)=1

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