The magnitudes of mutually perpendicular forces a, b and c are 2, 10 and 11 respectively. Then the magnitude of its resultant is [IIT 1984]

The magnitudes of mutually perpendicular forces a, b and c are 2, 10 a

1.	The magnitudes of mutually perpendicular forces a, b and c are 2, 10 and 11 respectively. Then the magnitude of its resultant is [IIT 1984]
A.	12
B.	15
C.	9
D.	None
Answer» C. 9

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The magnitudes of mutually perpendicular forces a, b and c are 2, 10 and 11 respectively. Then the magnitude of its resultant is [IIT 1984]

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