Question

Please answer the following question no spam answers
Q8 and q 14

Answer 1

In question no 14 .

LET A vector lies in x direction.

and B is in y direction.

there cross product will be in z direction.

and the angle between x and z axis is 90°.

so the dot product of to perpendicular vector is zero.

I can't help you in 8 question.

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