Question 50
Multiple Choice
Find the unit normal vector N(t) to the curve r (t) = ⟨sint,t,cost⟩ when t = 0.
A) (−1,0,0)
B) (0,0,−1)
C) (1,0,0)
D) (0,0,1)
E) (0,21,21)
F) (21,0,21)
G) (21,21,0)
H) (31,31,31)
Correct Answer:

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