Answer
2° 29'
Work Step by Step
1. Interior angles of triangle add up to 180 degrees. To find one of the interior angles just subtract two interior angles from 180 degrees.
$x=180^{\circ}-147^{\circ}12'-30^{\circ}19'=2^{\circ}29'$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.