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I need help with this question!-example-1
User Lex
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1 Answer

21 votes
21 votes

Answer:

the second one

85° = 2x+10+4x-15

85° = 6x-5

90° = 6x

x = 15°

BOC = 2×15° + 10 = 40°

AOB = 4×15° - 15 = 45°

........

User DomTomCat
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