Answer:
answer is 67
Explanation:
let use angle sum property
the sum if triangle is 180
if it is perpendicular it is 90 degree
180 is equal to 23+90+x
180 is equal to 133x
x is equal to 180-133
so we get 67
x=67
x+23+90=180
x+113=180
x=180-113
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