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If A-B=pi//4 , then (1+t a n A)(1-t a n ...

If `A-B=pi//4` , then `(1+t a n A)(1-t a n B)` is equal to.............. a. `2` b. `1` c. `0` d. `3`

A

1

B

2

C

`oo`

D

`-2`

Text Solution

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The correct Answer is:
B
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