Question: r ( t ) = 3 c o s t i + 3 s i n t j a . 1 b . - 1

r(t)=3costi+3sintj
a.1
b.-18costsint
c.18costsint
d.0
e.3costsint
r ( t ) = 3 c o s t i + 3 s i n t j a . 1 b . - 1

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