What is the measure of angle DCF in the circle?

To determine the measure of angle DCF in a circle, I need more information. Could you please provide additional details?

To find the measure of angle DCF in the circle, we need to gather some additional information. In a circle, there are several relationships between angles and arcs. Please provide any other relevant details, such as the measurement of other angles or the lengths of arcs, to help me narrow down the answer.