Question

how do i know what theta is to solve the length of an arc?

Answer 1

Does it not give you the degree of the central angle?

Answer 2

well, it's a circle...i'm not sure. i will set the problem as my profile picture lol

Answer 3

You can attach File... located at the bottom of where you post instead...

Answer 4

oh okay :D

Answer 5

What are you trying to find?

Answer 6

arcEDC

Answer 7

Is this a unit circle?

Answer 8

Look at the angle made up from Arc AB. There is a vertical angle equal to that angle made from Arc ED.... Do you see that those two are equal?

Answer 9

they are both 50?

Answer 10

yep

Answer 11

Yes so the arc EDC that you are trying to find is a total of 90 degrees.

The arc length is found by multiplying the degrees (90) times the radius. I don't know what your radius is...

Answer 12

it doesn't give me a radius...hmmm

Answer 13

i could give you the multiple choice answers?

Answer 14

Yes

Answer 15

45pi
45
5pi/2
5pi

Answer 16

sorry, i didn't find the pi symbol. and the 3rd one is a fraction

Answer 17

this one?

Answer 18

yep :)

Answer 19

i have an attachment in it

Answer 20

If AD=10, find the length of arcEDC

Answer 21

oh awesome! thanks :D

Answer 22

5 * pi/2

Answer 23

oh, wait sorry, 90 isn't an option

Answer 24

again; without any knowledge of the radius, there is no way to solve an arclength for this; so its most likely an angle

Answer 25

jonknet, yours is an option

Answer 26

convert degrees to radians

Answer 27

yeah amistre64 it is difficult

Answer 28

yes; radian measures....its good to know what the real question is :)

Answer 29

r=5. theta = 90pi/180 = pi/2. multiply out.

Answer 30

r = 5? wheres that at?

Answer 31

oh thank you so much!!!

Answer 32

AD = 10

Answer 33

i see no 10 lol

Answer 34

It's not in the picture. Check Momo's response a few up.

Answer 35

ah.....

Answer 36

I almost missed it too lol

Answer 37

you guys are awesome! thank you so very much!!