Question 1144154
sin(x)/2cos(X)/2(1-2sin^2(x)/2)
The answer in my book is 1/4 sin(2x) 
I tried solving it but I can't seem to figure out the answer.
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1) it's ambiguous. add parentheses.
2) there's nothing to solve.  Problems are solved.  Equations are solved.  This is neither.
3) You didn't ask a question or make a request.