Well, there's a radical, so that gets rid of all the negative numbers. Then the domain of tangents is all real numbers except for pi/2, 3pi/2, etc (n*pi/2 where n is a positive integer).
Final answer: 0, and all the positive numbers that aren't an integer multiple of pi/2
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Well, there's a radical, so that gets rid of all the negative numbers. Then the domain of tangents is all real numbers except for pi/2, 3pi/2, etc (n*pi/2 where n is a positive integer).
Final answer: 0, and all the positive numbers that aren't an integer multiple of pi/2
tanx=sinx/cosx
for all real numbers, only the positive integers are included.
cosx can NOT =0
cosx=0 when x= [Ï/2,3Ï/2, +2Ï] so all these numbers are excluded.
the rest of the real positive numbers plus the zero are the domain.