RoyaltiZ484144 RoyaltiZ484144

30-10-2022
Mathematics

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What is the reference angle of -139 degrees

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AlanahE621716 AlanahE621716

30-10-2022

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

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