If cosec^(2)theta+cot^(2)theta=(5)/(7), ...

If `cosec^(2)theta+cot^(2)theta=(5)/(7)`, then find the value of `cosec^(4)theta-cot^(4)theta`.

A

`(5)/(7)`

B

`(7)/(5)`

C

`(1)/(7)`

D

None of these

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A

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