Find x if angle AOC =(2x-10) ,angle COD=(x-10)° and angle DOB=(x+20)°
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Given, angle AOC = (2x - 10%) and angle BOC = (3x + 20°) also, AOB is a straight line.
The sum of two angles on a straight line is 180°.
As, AOB is a straight line;
=> angle AOC + angle BOC = 180°
=> (2x-10) + (3x+20) = 180
=> 2x -10 + 3x + 20 = 180
=> 5x + 10 = 18
=> 5x = 180 - 10
=> 5x = 170
=> x = 170/5 => x = 34
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