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MaRussiya [10]
3 years ago
6

In the diagram below, ab and bc are tangent to o. what is the measure of adc

Mathematics
2 answers:
vladimir1956 [14]3 years ago
8 0

Answer:

The correct option is B. 252°

Step-by-step explanation:

There are 360° in the circle.

So using the relation :

\frac{\text{(arc ADC - arc AC)}}{2} = \angle ABC

⇒ arc ADC - arc AC = 2 × ∠ABC

⇒ arc ADC - 108° = 2 × 72°

⇒ arc ADC - 108° = 144°

⇒ arc ADC = 144° + 108°

⇒ arc ADC = 252°

So, The measure of ∠ADC = 252°

Hence, The correct option is B. 252°

Andrej [43]3 years ago
4 0

Answer:

Step-by-step explanation: 252 apex

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