Find the unit tangent vector 
Definitions:
Specific Gravity
A measure of the density of a substance compared to the density of water.
Dehydration
A condition resulting from the excessive loss of body water.
Urinary Diversion
A surgical procedure to redirect urine flow from its normal pathway due to disease or injury, often involving the creation of a stoma on the abdominal wall.
Ileal Conduit
A surgical procedure to create a new path for urine to exit the body after the bladder has been removed, using a segment of the ileum (part of the small intestine).
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