Answer :
The sum of angles BAC and CAD is the angle DAB.
[tex]\begin{gathered} m\angle BAC+m\angle CAD=m\angle DAB \\ \\ m\angle CAD=m\angle DAB-m\angle BAC \\ m\angle CAD=62-23 \\ m\angle CAD=39 \end{gathered}[/tex]Then, the measure of angle CAD is 39°