If the point `(a^2,a+1)` lies in the angle between the lines `3x-y+1=0` and `x+2y-5=0` containing the origin, then find the value of `adot`

Find the angle between the lines x-2y+5=0 and x+3y-5=0 .

Find the angle between the lines x-2y+3=0 and 3x+y-1=0 .

Find the angle between the lines 3x=5 and 3x+5y-2=0

The point (a^(2),a+1) lies in the angle between the lines 3x+y+1=0 and x+2y-5=0 containing the origin. If a is an integer, then the sum of all possible values of a is

Find the angle between the lines 3x=5 and 3x+5y-2=0 .

The angle between the lines 3x-y+5=0,x+3y-2=0 is

Find the angle between the lines x+3y-8=0 and 2x-3y+6=0 .