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Answer :
Answer:
41°
Step-by-step explanation:
Find the acute angle in the first quadrant used as a reference for
−139°.
41°
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Rewritten by : Barada
41º
1) Since we want to find the reference angle for a -139º angle, we need to resort to the following formula
[tex]Reference\:Angle\:\:Quadrant\:III=180^{\circ}-139^{\circ}=41^{\circ}[/tex]2) Note that a -139 angle is in quadrant III, since negative angles are clockwise oriented
3) Thus the Reference Angle is 41º
