Find T, N, and B for the given space curve.r(t) = 
i + 
j + 4tk
A. T = 
(cos 0.75t)i - 
(sin 0.75t)j + 
k; N = (-sin 0.75t)i - (cos 0.75t)j; B = - 
k
B. T = 
(cos 0.75t)i - 
(sin 0.75t)j; N = (-sin 0.75t)i - (cos 0.75t)j; B = 
(cos 0.75t)i - 
(sin 0.75t)j - 
k
C. T = 
(cos 0.75t)i - 
(sin 0.75t)j + 
k; N = (-sin 0.75t)i - (cos 0.75t)j; B = 
(cos 0.75t)i - 
(sin 0.75t)j - 
k
D. T = 
(sin 0.75t)i - 
(cos 0.75t)j; N = (-sin 0.75t)i - (cos 0.75t)j; B = 
(cos 0.75t)i - 
(sin 0.75t)j - 
k
Answer: C
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