Match the vector equation with the correct graph.
r(t) = 2 cos ti + sin tk; 0 ? t ? ?
A. Figure 4
B. Figure 2
C. Figure 7
D. Figure 6
Answer: A
Mathematics
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B. 
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A. 729 B. 84 C. 504 D. 27
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Add the given vectors by using the trigonometric functions and the Pythagorean theorem.A = 31.0, ? = 114.6 °B = 12.6, ? = 159.3 °
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
B. 
C. 
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