Posted by john peaterson on Thursday, April 1, 2010 at 6:38pm.
y = 5 + sin x - 3 cos x
dy/dx = 0 at min or max = cos x + 3 sin x
cos x = - 3 sin x
tan x = -1/3
x = -18.4 deg
that is in quadrants 2 and 4
x = 161.6 and 341.6 degrees
at 161.6
5 + sin x -3 cos x =5.27
at 341.6
5 + sin x -3 cos x = 4.64
looks like at 161.6 degrees for max
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