Angle a is an obtuse angle.The measure of angle a and twice its supplementary differ by 30'.Then, angle a can be
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angles 30 and 60
2 × 30 = 60
twice of 30
2 × 30 = 60
twice of 30
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Answer:
Step-by-step explanation:
30+2a=180
2a=180-30
2a=150
a=150/2
a=75
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