Geo ScreenCast 12: Arc Length
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loud background music and I cant barely hear you.
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are u a teacher???
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*loud
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your background music is WAY to lound
afxtwn 4 years ago 3
The method that I learned when I was in school for arc length:
s = rθ
...where s = arc length, r = radius of the circle, and θ = central angle in radians. In your example:
s = 6 cm ∙ 150°
s = 6 cm ∙ (150° ∙ (π / 180 rad)) [convert to radians]
s = 6 cm ∙ 5π/6 rad = 30π/6 = 5π cm = 15.708 cm.
Both work, of course, but just mentioning another way to do it ;).
mung0jerry 2 years ago