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If 2x= sin theta and 2/x=cos theta , th...

If `2x= sin theta ` and `2/x=cos theta `, then the value of `4(x^2+1/x^2)` is:
यदि `2x= sin theta ` और `2/x=cos theta `, तो `4(x^2+1/x^2)` का मान है:

A

0

B

2

C

1

D

4

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