Question

The maximum and minimum magnitude of the
resultant of two given vectors are 17 units and 7 unit
respectively. If these two vectors are at right angles to
each other, the magnitude of their resultant is [Kerala
(a) 14
(b) 16
(C) 18
(a) 13​

Answer 1

:Mean a is 12 and b is 5

By adding them ans is 17 while subtracting ans is 7

So use pathagorous theorem to find resultant at perpendicular. .

R = √ (12)2 + (5)2

R = √ 144+ 25

R = √ 169

R = 13

Hope it helps you

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