how to find unit tangent vector?

i have a equation r=(tcost+t) i+(sint)j
x=tcost+t and y=sint
i have to find dr/dt
modulus of dr/dt=sgrt(x^2+y^2)

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how do i get these parts pls do help
Did you find dx and dy?

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Asked:

on 18 Nov 2019

Commented:

on 18 Nov 2019

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