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If (secA+tanA)(secB+tanB)(secC+tanC)=(se...

If `(secA+tanA)(secB+tanB)(secC+tanC)=(secA-tanA)(secB-tanB)(secC-tanC),` prove that the value of each side is +-1.

A

0

B

1

C

`-1`

D

`pm1`

Text Solution

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The correct Answer is:
D
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