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If (secA-tan A)(secB -tan B)(sec C-tan C...

If (secA-tan A)(secB -tan B)(sec C-tan C)(sec A+tan A)(sec B+tan B)(sec C+tan C) is equal to

A

`+-1`

B

1

C

(-1)

D

none of these

Text Solution

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The correct Answer is:
B
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