Question

in the given figure,O is the centre of a circle and <AOC = 120°<br />Find <BDC




I need answer yarrr pls.
if u don't know don't ans stop wasting my effort on asking.​

Answer 1

Answer:

30°

Step-by-step explanation:

Hope you understand it..........

Answer 2

Answer:

Let us consider a another point say E

Than EOC will be a right angled ∆ where E is the right angle.

Now, we know that , sum of adjacent Angle is 180°

so, angle AOC-X= 180°

120-X=180°

X=180°-120°

X=60°.

Now we know that angle E is 90°

the sum of a triangle is 180°

So,

60°+90°+C=180°

150°+C =180°

C= 180°-150°

C=30°

If C=30° ,D is also equal to 30° because they are vertical opposite angles are equal.

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