chayiljacquet
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  • 23-07-2018
  • Mathematics
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Find the angle between two vectors [see attachment]
Please help!!

Find the angle between two vectors see attachment Please help class=

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Аноним Аноним
  • 23-07-2018

Angle = arccos (dot product / product of the magnitues)


dot product = 1*-1 + 9*sqrt7 = 22.812

product of the magnitudes = sqrt(1 + 7) * sqrt(1 + 82) = 25.612


required angle = arccos (22.812/25.612) = 27 degrees to nearest degree


Its choice b.

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