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To solve for the value of angle O?, we can use the fact that the sum of the angles in a triangle is 180°.
Since we are given the other two angles in the triangle (38° and 29°), we can find ? by subtracting their sum from 180°:
O? = 180° - 38° - 29°
O? = 180° - 67°
O? = 113°
Therefore, the value of O? in the triangle is 113° which, when rounded to the nearest tenth, is 113.0°.
None of the answer choices match the value we calculated, so this was not possible to solve.