Question

@Kevin

Answer 1

@jiteshmeghwal9
can u help us?
I really never meet the symbols on the question

Answer 2

wait

Answer 3

is that itachi picture xD

Answer 4

The arc AC subtends angle 100 degree at the center & BD subtends 30 degree at the center.

Answer 5

yes tthat is itachi's picture

Answer 6

maybe you can give the image, It's more easy to understand

Answer 7

O is the center of circle

can u see the angles subtended ?

Answer 8

Ok 'O' is the center of the circle