Question

if i are j unit vectors along mutually perpendicular directions then the magnitude of i - j is
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Answer 1

Answer: since î and j^ are mutually perpendicular to wash other then angle between both the vectors will be 90°

Now î= 1( because it is unit vector )

And j^ = -1

Now |[î-j^]|= √(1)²+(-1)²+ cos90°

= √ 1+1+0. (Because cos90°=0)

= √2

Hence, magnitude of î-j^ is √2

Answer 2

Answer:

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Explanation:

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