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Which angles are coterminal with - 6pi/5

 

Select each correct answer:

 

a. 14pi/5

 

b. -11pi/5

 

c. -16pi/5

 

d.  -pi/5

 
whosmans  Nov 8, 2018
 #1
avatar+13612 
+1

If you add or subtract multiples of  2pi (a complete circle)  from -6pi/5  you will be right back at -6pi/5

so

(2pi = 10pi/5)

 

c   because  -6pi/5  - 10pi/5 = -16pi/5

 
ElectricPavlov  Nov 8, 2018
 #2
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+2

it is answer choice a. 14pi/5 as well as answer choice c. -16pi/5

 
Guest Nov 8, 2018
 #3
avatar+13612 
+1

You are correct.....I overlooked that multiple !   Thanx     cheeky

-6pi/5 + 10pi/5 + 10pi/5 = 14pi/5  

 
ElectricPavlov  Nov 8, 2018

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