'simplify' expression not efficient in Matlab2015
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I used Matlab 2015 to simplify an trigonometric expression, but in vain. It is not able to replace 1-sin^2() with cos^2(). If my memory serves correctly, Matlab2014 was able to do this very efficiently.
Is there a new function that does this in 2015, or we just lost a great feature.
Edit: Inserted Picture