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Answer:

x=33

Step-by-step explanation:

[tex]\hookrightarrow \: x + 90 + 57 = 180(sum \: of \: all \: angles \: of \: triangle)\\ \hookrightarrow \: x = 180 - 90 - 57 \\ \hookrightarrow \: x = 33[/tex]

ianaiman0212pf3cto
Since the internal angle of a triangle is = 180 degrees,

180 = 90 + 57 + x
x = 180 - 90 - 57
= 33