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If 2sec^(2) A - sec^(4) A - 2cosec^(2) A...

If `2sec^(2) A - sec^(4) A - 2cosec^(2) A + cosec^(4) A = 15//4`, then tan A is equal to

A

`1//sqrt(2)`

B

`1//2`

C

`1//2sqrt(2)`

D

`-1//sqrt(2)`

Text Solution

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The correct Answer is:
A, D
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