[tex]\qquad\qquad\huge\underline{{\sf Answer}}♨[/tex]
Here we go ~
According to given figure,
[tex]\qquad \sf \dashrightarrow \:x + 68 = 174[/tex]
[tex]\qquad \sf \dashrightarrow \:x = 174 - 68[/tex]
[tex]\qquad \sf \dashrightarrow \:x = 106 \degree[/tex]
