Question

Reference angle

Answer 1

\[2\pi/3\]

Answer 2

where is that given angle located? which quadrant?

Answer 3

it just says give the reference angle.

Answer 4

yes I know

Answer 5

you need to know which quadrant 2pi/3 is in

Answer 6

can u explain

Answer 7

here's a good example using degrees

http://image.mathcaptain.com/cms/images/67/reference-angle-image.png

Answer 8

in that example, they have A = 120 degrees

the reference angle is 60 degrees (they show you why)

Answer 9

the same idea applies to radians as well

Answer 10

sorry i accidently closed it

Answer 11

and if you want, you can convert 2pi/3 radians to degree mode

Answer 12

2pi/3 *180/pi

Answer 13

yes, you multiply by 180/pi to get ???

Answer 14

120

Answer 15

so 2pi/3 radians = 120 degrees

Answer 16

ohh