Angle between lines
Acute angle from slopes m1, m2.
Calculator
How to use
Formula
tan of angle difference.
Educational use only. For assessments, show reasoning and check boundary cases.
Acute angle from slopes m1, m2.
tan of angle difference.
Educational use only. For assessments, show reasoning and check boundary cases.
Model / formula
Angle between lines (from slopes)
Result
Acute angle ≈ 45.000000°