Question

Use the arc length formula and the given information to find s.
r = 20 ft θ = 19° s = ?

Answer 1

do you know the arc length formula?

Answer 2

\[s=rsigma\]

Answer 3

\[s=r \sigma\]

Answer 4

R must be in radian measure

Answer 5

Can anyone help me?

Answer 6

S= r theta
theta should be in radians
convert 19 into radians ?

Answer 7

do u know how to covert degrees into radians ?
r will remain as 20 only

Answer 8

Sorry I meant theta should be in radians

Answer 9

Ok so theta in radians would be 19pi/180 ?

Answer 10

yes, now just put values
S = 20 * 19pi / 180 = ?

Answer 11

Ok so would the answer be 19pi/9 ?

Answer 12

yes, if you want the answer to be kept in terms of pi

Answer 13

else put pi=3.14

Answer 14

Thank you so much!

Answer 15

welcome ^_^