Calculate the unit vector u = (cos ?)i + (sin ?)j for the given direction angle.? = 
A. i -
j
B. - i -
j
C. - i +
j
D. i +
j
Answer: C
Mathematics
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A. No B. Yes
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A.
B. 24x2y
C.
D.
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What will be an ideal response?
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Fill in the blank(s) with the appropriate word(s).
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