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(1 - cot^(2)45^(@))/(1 + cot^(2)45^(@)) ...

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

A

`cos90^(@)`

B

`sin90^(@)`

C

`sin45^(@)`

D

`cos 45^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
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