Question

(Help!)
Determine the length of arc JL.

A) 59/12π
B) 5/6π
C) 13/12π
D) 13/6π

Answer 1

First, convert the angle to radians. Then, the equation is:
\[l_{arc} = \Theta \times r\]

Answer 2

the equation you typed. . . does it say large arc=a cos sign x radius?

Answer 3

Theta is just the angle (65°) in radians. r is just the radius.

Answer 4

oh so if i plug it in it would be 65x3

Answer 5

But 65° is in degrees. To convert from degrees to radians, multiply the angle by pi and divide by 180. So, 65° in radians is:

\[\frac{65 \pi}{180} = \frac{13\pi}{36}\]

Answer 6

Then, you can multiply that by three to get the length of the arc.

Answer 7

ok so if i did this: 13pi/36x3 = 13pi/12. did i do that right?

Answer 8

Yup

Answer 9

awesome thanks. Your a big help! :)