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nerdyotter
 one year ago
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 = BD, then what is the degree measure of arc EF?
Image of the circle:
http://i.imgur.com/sloZ0jb.png
nerdyotter
 one year ago
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 = BD, then what is the degree measure of arc EF? Image of the circle: http://i.imgur.com/sloZ0jb.png

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A is 90 degrees because theres a rule that if theres an inscribed triangle that used the diameter it's 90 degrees

nerdyotter
 one year ago
Best ResponseYou've already chosen the best response.0Meaning that length BD is now the hypotenuse of the right triangle ABD?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0c is 14.13 because BDA is a 90 degree angle and BCD is half of 360 which is 180 because it's a diameter. so use the formula x/360*pi*2r

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0BA is the hypotenuse

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0For D say it's identical.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0E is obviously 180 degrees because it's equal to the diameter.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Angle DBA is 30 degrees

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sh1t sorry yea u were right the diameter is the hypotenuse

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That means BDA is 60 degrees

nerdyotter
 one year ago
Best ResponseYou've already chosen the best response.0@yomamabf For your first response, were you trying to tell me that the measure of angle A is 90 degrees or that the answer to question A is 90 degrees?
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