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babydoll332

  • 3 years ago

Use the arc length formula and the given information to find r. s = 12 cm, θ = 36°; r = ?

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  1. babydoll332
    • 3 years ago
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    30/pi or 60/pi im not sure please help wich 1 i think its deff 30/pi

  2. dpaInc
    • 3 years ago
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    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.

  3. babydoll332
    • 3 years ago
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    check

  4. dpaInc
    • 3 years ago
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    ???

  5. babydoll332
    • 3 years ago
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    i did this

  6. dpaInc
    • 3 years ago
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    \(\large \theta = 36 \cancel {deg} \cdot \frac{\pi rad}{180 \cancel {deg}}=\frac{ \pi }{5} \text radians \)

  7. dpaInc
    • 3 years ago
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    so now, \(\large 12=\frac{\pi}{5}\cdot r \rightarrow r=\frac{60}{\pi}\)

  8. babydoll332
    • 3 years ago
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    oh i see thank you so much

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