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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds) s=-4+3 cos t Find the body's velocity at time t=pi/3 sec.
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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds) s=-4+3 cos t Find the body's velocity at time t=pi/3 sec.

User Mark Swardstrom
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6*cos(pi/4) + sin(pi/4) = 6*sqrt(2)/2 + sqrt(2)/2 = 7*sqrt(2)/2 = 3.5*sqrt(2
User Kingluo
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