legault28332 legault28332
  • 06-03-2024
  • Mathematics
contestada

A vector of length √7 which is perpendicular to 2i-k and -i+2j-3k and makes an obtuse angle with the y-axis is:

a) √2i - k
b) -√2i - k
c) √2i + k
d) -√2i + k

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