यदि vecA =hati-hatj+hatk तथा vecA+vecBx-...

यदि `vecA =hati-hatj+hatk` तथा `vecA+vecBx`-अक्ष के अनुदिश एकांक सदिश है, तो `vecB` होगा :

A

`hatj+hatk`

B

`hatj-hatk`

C

`hati+hatj+hatk`

D

`hati+hatj-hatk`

लिखित उत्तर

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The correct Answer is:

B

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