Find a unit tangent vector to any point on the curve X=a cos wt, Y=a sin wt and z=bt. where a,b,w are constant

Find a unit tangent vector to any point on the curve X=a cos wt, Y=a s

1.	Find a unit tangent vector to any point on the curve X=a cos wt, Y=a sin wt and z=bt. where a,b,w are constant
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Find a unit tangent vector to any point on the curve X=a cos wt, Y=a sin wt and z=bt. where a,b,w are constant

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