If x = a cos t is the displacement in time t then, acceleration is :

1.	If x = a cos t is the displacement in time t then, acceleration is :
Answer» a COS t ` - a cos t` a sin t `- a sin t ` SOLUTION :`V = (d)/(DT) (COST)= - a sin t ` `a = (d)/(dt) (-a sin t) = - a cos t`

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