I believe it is an imaginary number because imaginary numbers are square roots of negative numbers.
Here is the answer for prove that cos theta by 1 minus tan theta + sin theta by 1 minus cot theta equal to sin theta + cos theta
Rational ! the number doesn't repeat forever or anything like that. it simplifies nicely.
Answer:

Step-by-step explanation:
by factorising ;
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<em>i</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>helped</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>