Question 1167014
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1)   The fragment    " x = arctan/2018 "  is  DEFECTIVE.




2)   In the expression   " cosx-siny/cosy+sinx + cosy-sinx/cosx+siny "


        distribute parentheses to show which part is the numerator and which part is denominator.




Then re-post to the forum.


Please do not post it to me personally.