1.

What is the acute angle between the pair of straight lines \(\sqrt 2 {\rm{x}} + \sqrt 3 {\rm{y}} = 1\) and \(\sqrt 3 {\rm{x}} + \sqrt 2 {\rm{y}} = 2?\)

A. \({\tan ^{ - 1}}\left( {\frac{1}{{2\sqrt 6 }}} \right)\)
B. \({\tan ^{ - 1}}\left( {\frac{1}{{\sqrt 2 }}} \right)\)
C. tan-1 (3)
D. \({\tan ^{ - 1}}\left( {\frac{1}{{\sqrt 3 }}} \right)\)
Answer» B. \({\tan ^{ - 1}}\left( {\frac{1}{{\sqrt 2 }}} \right)\)


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