A) \[{{30}^{o}}\]
B) \[{{45}^{o}}\]
C) \[{{60}^{o}}\]
D) \[{{75}^{o}}\]
Correct Answer: C
Solution :
Slope of the line is, \[\tan \theta =\frac{{{y}_{2}}-{{y}_{1}}}{{{x}_{2}}-{{x}_{1}}}=\frac{\sqrt{3}-0}{2-1}\] \[=\sqrt{3}\] Þ \[\theta ={{\tan }^{-1}}\sqrt{3}={{60}^{o}}\].
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