Question

Find the angle between the vectors A = î + 2j-k, B = -î + j^ - 2k​

Answer 1

Answer:

Pi/3

Explanation:

A.B=ABcostheta

A. B=3

Take magiltude of a and b = root6 and root6 respectively then

A. B/AB= cos theta

=1/2

=cos(pi/3)

Answer 2

Explanation:

hence,cos theta=1/2 and then theta i.e. angle between the vector is 60°

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