Samir is a roofer. Here is a section of a roof made from straight pieces of wood.

Samir knows that

• the shaded triangle is an equilateral triangle

• the line DB is a line of symmetry

• the line ABC is a straight line

• the size of the angle marked x° indicates the pitch of the roof.

The table shows information about the pitch and angle of a roof.

Find the value of x and use the table to give the pitch of the roof.