Calculate the angle between two lines using their slopes with tan(θ) = |(m₂ - m₁) / (1 + m₁m₂)|.
Calculate the angle between two lines using their slopes with tan(θ) = |(m₂ - m₁) / (1 + m₁m₂)|.
The slope of the first line.
The slope of the second line.
The angle between two lines equals the arctangent of the absolute value of the difference of slopes divided by one plus the product of slopes.
How this calculator works
The angle between two lines equals the arctangent of the absolute value of the difference of slopes divided by one plus the product of slopes.
Common questions about this calculator
