What is the angle between $<0,2,-8>$ and $< -2,1,4 >$ ?

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What is the angle between $<0,2,-8>$ and $< -2,1,4 >$ ?

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Answer 1 · 2016-02-18T05:38:54

130.8 deg, nearly.

Explanation:

Use the formula for scalar (dot) product of two vectors.
The angle is arc cos (cross product if the components)/(product of the lengths of the vectors.
Here it is arc cos( $-$ 30 $/(sqrt68sqrt31$ )

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What is the angle between $<0,2,-8>$ and $< -2,1,4 >$ ?

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Explanation:

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What is the angle between <0,2,-8> <0,2,-8> and < -2,1,4 >< -2,1,4 >?

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Explanation:

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What is the angle between $<0,2,-8>$ and $< -2,1,4 >$ ?