यदि tan^(2) x + 1/(tan^(2)x)=2 और 0^(@)...

यदि `tan^(2) x + 1/(tan^(2)x)=2` और `0^(@) lt x lt 90^(@)` है, तो x का मान क्या है ?

A

`15^(@)`

B

`30^(@)`

C

`45^(@)`

D

`60^(@)`

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