The coordinates of an object moving in the xy plane vary with time according to the equations
x = −7.28 sin ωt and y = 4.00 − 7.28 cos ωt,
where ω is a constant, x and y are in meters, and t is in seconds.

Question

The coordinates of an object moving in the xy plane vary with time according to the equations 
x = −7.28 sin ωt and y = 4.00 − 7.28 cos ωt,
 where ω is a constant, x and y are in meters, and t is in seconds.

anonymous · Answer

What then is the question? So far you have only given data.

anonymous · Answer

find dx/dt, dy/dt or dy/dx such that dx/dy=dy/dx? Just what is the question?

anonymous · Answer

I don't think dy/dx makes alot of sense.  If we try to differentiate y = 4 - 7.28 cos wt with respect to x, we would just get 0 becuase there is no x.

anonymous · Answer

It does make sense because dy/dx = 0 because there's no x.

anonymous · Answer

I agree that it is mathematically doable, I just don't see a point for dy/dx or dx/dy.  Regardless, we can't really do anything without an actual question.