If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the velocity vector.r(t) = (cot t)i + (csc t)j
A. v = (-sec2 t)i - (tan t sec t)j
B. v = (csc2 t)i + (cot t csc t)j
C. v = (-csc2 t)i - (cot t csc t)j
D. v = (sec2 t)i + (tan t sec t)j
Answer: C
Mathematics
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A. 0
B. - 
C. -
D. 1
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C. 
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