anonymous
  • anonymous
If arc AB=40 and arc CD=100, what is the value of angle CFD?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
|dw:1371200733670:dw|
dan815
  • dan815
the angle from center = the same of arc length at circumferance|dw:1371202290443:dw|
rsadhvika
  • rsadhvika

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dan815
  • dan815
and the angle of ends = half of that
rsadhvika
  • rsadhvika
|dw:1371202373943:dw|
dan815
  • dan815
|dw:1371202368266:dw|
rsadhvika
  • rsadhvika
Angle made by intersecting chords = Average of intercepting arcs
dan815
  • dan815
ok anywy moving on, now BDF = half the arc of the other one
dan815
  • dan815
|dw:1371202481233:dw|
dan815
  • dan815
circles are fun, forget all these silly formulas just use the basic principles
rsadhvika
  • rsadhvika
circles are silly

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