If ( vec{a} )= ( hat{i} )+4 ( hat{j} ) and ( vec{b} )=3 ( hat{i} )-3 – McqOptions

MCQOPTIONS

1.	If ( vec{a} )= ( hat{i} )+4 ( hat{j} ) and ( vec{b} )=3 ( hat{i} )-3 ( hat{j} ). Find the magnitude of ( vec{a}+ vec{b} ).
A.	( sqrt{6} )
B.	( sqrt{11} )
C.	( sqrt{5} )
D.	( sqrt{17} )
Answer» E.

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