Considering the following dataset, how do I find the angle when the two lines intersect at time 4. Please not that the two lines don't represent a function, this is just a data set.
Time Line 1 Line 2
0 20 19.95
1 20.5 20
2 21 20.05
3 20.5 20
4 22 23
5 23 25
Thanks for the help!