question_answer

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

A)  \[60{}^\circ \]                         

B)  \[180{}^\circ \]

C)  \[90{}^\circ \]                         

D)  \[45{}^\circ \]

E)  None of these