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If tan theta + sec theta= (x - 2)//(x + ...

If `tan theta + sec theta= (x - 2)//(x + 2)`, then what is the value of `cos theta`?

A

a) `(x^2-1)//(x^2+1)`

B

b) `(2x^2-4)//(2x^2+4)`

C

c) `(x^2-4)//(x^2+4)`

D

d) `(x^2-2)//(x^2+2)`

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