Question

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Answer 1

Answer:

angle AOD = 2x + 30°

angle DOB = x

x= 75°

angle AOC = 75°

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

AB is straight line DC line divided AB in two angle ,, which sum is 180°

(2x+30°)+ (x)=180°

or 3x+30°=180°

or 3x=180°-30°

or x=150°/3

or x=50°

therefor two angles are= 50°,(2×50°+30°)

=50° &130°

therefore angle AOC=x=50°(opposite angle)