1.

What is the acute angle between the lines represented by the equations \({\rm{y}} - \sqrt 3 {\rm{x}} - 5 = 0\) and \(\sqrt 3 {\rm{y}} - {\rm{x}} + 6 = 0\)?

A. 30°
B. 45°
C. 60°
D. 75°
Answer» B. 45°


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