Unit vector parallel to the resultant of vectors →A=4^i−3^j and →B=8^i+8^j will be
A
6^i+5^j13
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B
None of these
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C
12^i+5^j13
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D
24^i+5^j13
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Solution
The correct option is C12^i+5^j13 Resultant of vectors →A and →B →R=→A+→B =4^i−3^j+8^i+8^j =12^i+5^j ^R=→R|R| =12^i+5^j√(12)2+(5)2 =12^i+5^j13
Final Answer: (B)