Question 1114847
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<pre>
{{{(1- cos(x))/sin(x)}}} = cosec(x) - cot(x).
</pre>

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(it is &nbsp;"black humor"&nbsp; from my side . . . )



    It is for the first time in my life I see this &nbsp;"collection of words" &nbsp;<U>complete the identity</U>, &nbsp;which may have &nbsp;100, &nbsp;if not &nbsp;1000 &nbsp;meanings,

    and therefore does not make sense at all.