How do you determine if $y=cotx$ is an even or odd function?

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Answer 1 · 2017-01-30T20:25:46

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A function is even if $f(-x) = f(x)$ . For example, $cos(-pi)=cospi$ , so $y=cosx$ is an even function.

A function is odd if $f(-x)=-f(x)$ . For example, $sin(-pi)=-sinpi$ , so $y=sinx$ is an odd function.

How do you determine if y=cotxy=cotx is an even or odd function?