Question

answer fat plz correct answer plz plz..........​

Answer 1

Answer:

40

Step-by-step explanation:

Given, ∠ABC = 20°

We know that, angle subtended at the centre by an arc is twice the angle subtended by it at the remaining part of circle.

∠AOC = 2∠ABC = 2 x 20° = 40°

Answer 2

ANSWER :

b) 40·

Step-by-step explanation:

/_ ABC is a Inscribed angle as it is inscribed in arc ABC.

It intercepts the arc AC .

Thus , by incribed angle theorem

/_ ABC =1/2 * m(arc AC)

20 = 1/2 * m(arc AC)

20 * 2 = 1 * m(arc AC )

40 = m(arc AC)

m(arc AC) = 40·

Now, /_ AOC is a central /_ .

And , it intercepts the arc AC

Thus , m(/_AOC) = m(arc AC)

/_ AOC = 40·