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Mathematics 7 Online
OpenStudy (anonymous):

An angle of -4π/3 radians has the same sine and cosine as an angle of which of the following degree measures? 60° 90° 120° 180° 240°

OpenStudy (ghazi):

-4 pi /3 =-(pi+ pi/3)

OpenStudy (ghazi):

that means third quadrant so i guess it's 240

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