anonymous
  • anonymous
Use the arc length formula and the given information to find r. s = 12 cm, θ = 36°; r = ?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
30/pi or 60/pi im not sure please help wich 1 i think its deff 30/pi
anonymous
  • anonymous
the formula is s = r*theta, where theta is given in RADIANS. so you should first convert that degree measure into radians then you can use the formula.
anonymous
  • anonymous
check

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anonymous
  • anonymous
???
anonymous
  • anonymous
i did this
anonymous
  • anonymous
\(\large \theta = 36 \cancel {deg} \cdot \frac{\pi rad}{180 \cancel {deg}}=\frac{ \pi }{5} \text radians \)
anonymous
  • anonymous
so now, \(\large 12=\frac{\pi}{5}\cdot r \rightarrow r=\frac{60}{\pi}\)
anonymous
  • anonymous
oh i see thank you so much

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