anonymous
  • anonymous
Find the length of a 40 degree arc in a circle with a radius of 4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
|dw:1327427504346:dw|
anonymous
  • anonymous
C=(180-40)/2=70
amistre64
  • amistre64
arcLength = 40*4pi/180

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anonymous
  • anonymous
\[CH=\cos (70) * radius(4)\]
anonymous
  • anonymous
BC=2CH because AB=AC and CH=BH
amistre64
  • amistre64
arc length is just part of a circumference; C = 2pi r arc length = angle * radius ; whenere the angle is in radians
amistre64
  • amistre64
i think ali might of read it wrong to begin with ...

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