Physics question, I'm having trouble with a X,Y plane and equations.?

The coordinates of an object moving in the xy plane vary with time according to the equations x = −5.63 sin ωt and y = 4.00 − 5.63 cos ωt, where ω is a constant, x and y are in meters, and t is in seconds. Write expressions for the position vector, the velocity vector, and the acceleration vector of the object... show more The coordinates of an object moving in the xy plane vary with time according to the equations
x = −5.63 sin ωt and y = 4.00 − 5.63 cos ωt,
where ω is a constant, x and y are in meters, and t is in seconds.

Write expressions for the position vector, the velocity vector, and the acceleration vector of the object at any time t > 0. (Use the following as necessary: omega for ω and t.)
r= -5.63sin(ωt) + (4-5.63cos(ωt))
v= 1st derivative, -5.63ωcos(ωt)+5.63sinω(ωt)
a= 2nd 5.63ω^2sin(ωt)+5.63cosω^2(ωt)

What am I doing wrong here?
Update: 5.63cosω^2(ωt) --> 5.63ω^2cos(ωt)
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