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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Find the quotient. ÷ 

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).

Mathematics