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The maximum and minimum magnitude of the...

The maximum and minimum magnitude of the resultant of two given vectors are 17 units and 7 units respectively. If these tow vectors are at right angles to each other, the magnitude of their resultant is

A

14

B

16

C

18

D

13

Text Solution

Verified by Experts

The correct Answer is:
d
a+b =17, a-b =7 `rarr` a=12 , b =5
`rarr` magnitude of `bara` and `barb` if they are r is `sqrt(a^(2)+b^(2))=13`
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