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What is the measure of Arc CB? 84 60 90 67
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1 vote
What is the measure of Arc CB?
84
60
90
67

What is the measure of Arc CB? 84 60 90 67-example-1
User Madhivanan
by
7.4k points

1 Answer

4 votes

Answer:

60°.

Explanation:

1. DB is diametre, then

2. m∠BCD=90°, then

3. m∠BDC=m∠BCD-m∠CBD=90-60=30°, then

4. finally, Arc(CB)=2*m∠BDC=60°.

User Seymur Mammadli
by
7.6k points
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