9000101901

Find the angle between two lines and round your answer to the nearest minute. $$\begin{array}{rlr}p:x& =2-t,& \\ y& =3t,\\ z& =1;t\in \mathbb{R}\end{array}\begin{array}{rlr}q:x& =2s,& \\ y& =4s,\\ z& =1-s;s\in \mathbb{R}\end{array}$$