Question

If ˉ a and ˉ b are two units vectors then ˉ a × ˉ b will also be a unit vector if

Answer 1

Step-by-step explanation:

if a and b are 2 unit vectors then a×b will also be a unit vector is the angle between them isnt 0...as cos 0 will be 0

Answer 2

Answer:

if both the vectors are perpendicular to each other.

Step-by-step explanation:

given,

IaI=1

IbI=1

axb=IaI IbI sinФ

=>axb=1x1xsinФ

=>axb=sinФ

=>axb=1 only if Ф=90°

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