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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