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I need a proof using cosx=sinx/tanx.  I have   (sinx/tanx)'=quotient rule=(tanx(cosX)-sinx(sec^2x))/ tan^2x   = (sine-sinx(sec^2x))/ tan^2x   I need the rest from there


Help with this problem. How do you setup equation

The distance traveled by an object moving in straight line is given by s=t2-2t (that is t squared not t2), where s is in feet and t is in the time in seconds the object has been in motion.  How... more

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