1.

The angle made by the vector \[A=\hat{i}+\hat{j}\] with x- axis is             [EAMCET (Engg.) 1999] 

A.             \[\text{9}0{}^\circ \]          
B.             \[\text{45}{}^\circ \]
C.             \[\text{22}.\text{5}{}^\circ \]
D.             \[\text{3}0{}^\circ \]
Answer» C.             \[\text{22}.\text{5}{}^\circ \]


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