1. Two vectors are parallel provided that one is a scalar multiple of the other. Determine whether the vectors a and b are parallel, perpendicular, or neither.
a = 12i - 20j + 17k and b = -9i + 15j + 24k© BrainMass Inc. brainmass.com October 10, 2019, 1:07 am ad1c9bdddf
a ⃗∙b ⃗=|a ⃗ ||b ⃗ |Cosϑ
a ⃗∙b ⃗=(12i - 20j + 17k)∙(-9i + 15j + 24k)=-108-300+408=0
Since,a ⃗∙b ⃗=0,therefore,|a ⃗ ||b ⃗ |Cosϑ is also equal to zero.
|a ⃗ |≠0
|b ⃗ ...
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