1.

Angle between the lines \[2x-y-15=0\] and \[3x+y+4=0\]is   [RPET 2003]

A. \[{{90}^{o}}\]
B. \[{{45}^{o}}\]
C. \[{{180}^{o}}\]
D. \[{{60}^{o}}\]
Answer» B. \[{{45}^{o}}\]


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