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Show that the equation sintheta=x+1/x is...

Show that the equation `sintheta=x+1/x` is not possible if `x` is real.

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`x+1/x = (sqrtx)^2+(1/sqrtx)^2`
`=(sqrtx-1/sqrtx)^2 +2*sqrtx*1/sqrtx`
`=>x+1/x = (sqrtx-1/sqrtx)^2 +2`
`:. x+1/x ge 2.`
But, `-1 le sin theta le 1` , so `sin theta` can not be greater than `1`.
Thus, `sintheta = x+1/x` is not possible if `x` is real.
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