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.