A) \[\frac{1}{2}\]
B) \[\frac{1}{\sqrt{2}}\]
C) \[\sqrt{3}\]
D) \[1\]
E) \[0\]
Correct Answer: E
Solution :
The straight line which does not intersect\[x-\]axis, ie, which always parallel to\[x-\]axis. So, slope of that line\[=tan\text{ }0{}^\circ =0\]
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