Answer:
40°
Step-by-step explanation:
As we have,
[tex]\rm\hookrightarrow[/tex]The Sum of all sides of a triangle is 180°
Now,
[tex]\rm\hookrightarrow 79+x+52+x+73=180\\\\\rm\hookrightarrow x=180-79-52-73\\\\\rm\hookrightarrow x=-12[/tex]
Again, finding the measure of ∡A by putting the value of x.
[tex]\rm\hookrightarrow x+52\\\\\rm\hookrightarrow -12+52\\\\\rm\hookrightarrow 40[/tex]
