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Choose the correct answer

 Nov 12, 2018
 #1
avatar+96363 
+1

-pi/6  is a 30°  reference angle in the 4th quadrant

 

A 30°  in the fist quadrant  has the coordinates  (  √3/2, 1/2)

 

But...in the 4th quadrant, the y coordinate is negative....so..

 

(  √3/2,  -1/2)

 

 

cool cool cool

 Nov 12, 2018

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