Respuesta :
Answer:
[tex]m\ arc\ CD=43\°[/tex]
Step-by-step explanation:
we know that
[tex]m<BAD=m\ arc\ BC+m\ arc\ CD[/tex] -----> by central angle
see the attached figure to better understand the problem
we have
[tex]m\ arc\ BC=105\°[/tex]
[tex]m<BAD=148\°[/tex]
substitute
[tex]148\°=105\°+m\ arc\ CD[/tex]
[tex]m\ arc\ CD=148\°-105\°=43\°[/tex]