coterminal angles help= hw

Question

What angles are coterminal to an angle measuring 2π/3 or −11π/7?

 

Coterminal with 2π/3:

Coterminal with −11π/7:

Answer 1

2pi/3 radians = 120 degrees

which is coterminal with 2pi/3 + 2npi where n= any integer, or 120 + 360n degrees where n= any integer

coterminal angles include 8pi/3 14pi/3, 20pi/3, 26pi/3, ...

-11pi/7 is coterminal with angles -11pi/7 + 2npi where n = any integer, such as

3pi/7, 17pi/7, 31pi/7, ...