Question 1160411
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            Hello,  you are,  probably,  a novice at this forum,  so I will provide some instructions to you on writing formulas.




If you want to request   {{{cos(2theta)}}},   write   cos(2*theta),  using  PARENTHESES.



If you want to request   {{{cos^2(theta)}}},   write cos^2(theta).



If you neglect these rules,  nobody will understand you,  and your time  (as well as the tutors' time)  will be spent for  NOTHING.