Is there a real number x, that the expressions tanx+√3 and cotx+√3 are both integers?
My solution:
First, let's assume tanx+√3=a and cotx+√3=b where a,b are both integers.
From the second equality, we get:
cotx+√3=b
cotx=b−√3
1tanx=b−√3
tanx=1b−√3
so we get
tanx=1b−√3=a−√3
(a−√3)(b−√3)=1
√3=ab+2a+b
But recall that both a,b are both integers, this last equality contradicts to our previous assumption and so the answer is nope.
There isn't any real x that serves both the given two expressions to be integers.
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