For the curve r(t), write the acceleration in the form aTT + aNN.r(t) = (t + 6)i + (ln(cos t) - 1)j + 9k
A. a = (-sec t tan t)T - (sec t)N
B. a = (sec t tan t)T + (sec t)N
C. a = (-sec t tan t)T + (sec t)N
D. a = (sec t tan t)T - (sec t)N
Answer: B
Mathematics
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A. 
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C. 5x2y2
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