Question

please tell the answer ​

Answer 1

Answer:

From the figure we can find out that b = (360-130)/2 = 115 degrees.

Step-by-step explanation:

It is basically the property of angle sum. The whole circle should be 360 degrees. If one side is 130, the rest must be 230 since 130+230=360. We then divide 230 by 2 since we know that AB=DB.

Hope this helps!