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trigonometry: Identify if the underlined word/s is true or false If false change it to the appropriate one If the arc length is 30π_feet with central angle equal to (3/4)revolution. The radius is equal to 20feet. 20 is the underlined word

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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here's a picture of the question: see item # 7
1 Attachment
use .. \[S = r \ \theta\]
where S is the arc length r is the radius theta is the angle measure in radiant

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Other answers:

angle of 3/4 revolution = 270 degrees = 3pi /2
and the length of the arc is 30 pi feet
\[S = r \ \theta\]\[30 \pi = r \times (\frac{ 3 \pi }{ 2 })\]
now make r the subject and c if the value u get for r is the same as in the question ..
got it :) ?
okay thanks. so it is true
u r welcome... and yes the statement is true!

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