A) \[{{60}^{o}}\]
B) \[{{15}^{o}}\]
C) \[{{30}^{o}}\]
D) \[{{45}^{o}}\]
Correct Answer: A
Solution :
Comparing the given equation with the standard equation, we get \[a=1,\,h=2\]and \[b=1.\] We also know that relation for the angle between the lines \[(\theta )\] is \[\tan \theta =\frac{2\sqrt{{{h}^{2}}-ab}}{a+b}\] \\[\tan \theta =\frac{2\sqrt{{{2}^{2}}-1}}{1+1}=\sqrt{3}\] or\[\theta ={{\tan }^{-1}}(\sqrt{3})={{60}^{o}}\].
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