Answer:52
Step-by-step explanation: Its a right angle so it is 90 degrees if you see it says 142 is the whole measurement so you subtract 142-90=52
At the corner of the angle on the right, there is the sign for a 90 degree angle. So, I think 142° is for the whole. If I am right, to find x you should subtract 90 from 142, so it is 52°.
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