nerdyotter
  • nerdyotter
The diameter of circle C is 18 cm. Chord AD is the same length as a radius. Use this information, the diagram, and your experiences in geometry this semester to answer these questions. (Use pi = 3.14.) a.) What are the measures of angles BDA and DBA? b.) What is the sine of angle DBA? c.) Find the length of arc AB to the nearest hundredth. d.) How does the length of arc AD compare to the length of arc AB? e.) If EF = 1/2(BD), then what is the degree measure of arc EF? Image of the circle: http://i.imgur.com/sloZ0jb.png
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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nerdyotter
  • nerdyotter
@surjithayer Thank you so much! I appreciate the detailed help a whole lot.
anonymous
  • anonymous
yw

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nerdyotter
  • nerdyotter
@surjithayer Could you explain to me why question (e) is equal to 60 degrees? To me, it seems like it would be equal to 90 degrees, since it's technically a fourth of the degree measure of a circle.
nerdyotter
  • nerdyotter
Maybe I'm just incorrectly assuming that BD is the diameter.

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