1212
3212
5712
14712
Correct answer is C
y = 6 sin (2x - 25)o dydx = -12 cos(2x - 25o) dydx = 0 -12 cos x (2x - 25o) = 0 = cos(2x - 25o) = 0 = 2x - 25o = cos-1(0) = 2x - 25o = 90o x = 1152
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