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There are two forces vector,one of 5N an...

There are two forces vector,one of 5N and other of 12N. At what angle should the two vector be added to get the resultant vector of 17N, 7N,and 13N respectively?

A

`0^(@),180^(@) and 90^(@)`

B

`0^(@),90^(@) " and " 180^(@)`

C

`0^(@),90^(@) " and " 90^(@)`

D

`180^(@), 0^(@) " and " 90^(@)`

Text Solution

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The correct Answer is:
A
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  20. Which of the following is perpendicular to hati-hatj-hatk?

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