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(Cos^(2)phi+(1)/(cosec^(2)phi))+17=x . W...

`(Cos^(2)phi+(1)/(cosec^(2)phi))+17=x` . What is the value of `x^(2)` ?

A

18

B

324

C

256

D

16

Text Solution

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The correct Answer is:
B
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