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"sec"^(2) theta = (4xy)/((x + y)^(2)) is...

`"sec"^(2) theta = (4xy)/((x + y)^(2))` is true if and only if-

A

`x + y != 0`

B

`x = y, x != 0`

C

`x = y`

D

`x != 0, y != 0`

Text Solution

Verified by Experts

The correct Answer is:
B
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