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Sketch the angle. Then find the reference angle.

1) -5π/6

 

2) 8π/3 


Just solve one of them and let me do the other one by myself plz

 Nov 29, 2018
 #1
avatar+101137 
+1

-5pi/ 6  =   -150”

 

2pi - 5pi/6 =

 

12pi/6 - 5pi/6 =

 

7pi/6   =  210°  

 

So....the refererence angle  is   [ 210 - 180]° = 30° in the 3rd quadrant

 

Here's a sketch

 

 

 

cool cool cool

 Nov 29, 2018

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