1.

LAOBShow tIn the adjoining figure, AOB is a straight line.Find the value of Hence, find AOCZCOD and ZBOD(3x+7)09-13. In the

Answer»

The sum of angles on a line is 180.=> (3x+7)+(2x-19)+X = 180=> 6x - 12 = 180=> 6x = 192=> X = 32.

Angle AOC = 3x +7 = 103. Angle DOB = X = 32. Angle COD = 2x - 19 = 45.

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