<em><u>Explanation</u></em><em> </em><em>:</em>
The line DF is parallel to OB, therefore Angle x = Angle y.
( because, they for corresponding angle pair which are equal. )
And the angle made by an arc at center is always double the angle made by the same arc at its boundary, hence
Answer:
20
Step-by-step explanation:
Nothing just lay in bed all day on my phone-
Answer:
A
Step-by-step explanation:
