Answer:
33 degrees
Explanation:
This is a right angle, meaning that there is a 90 degree angle. If you know that there is a 57 degree part, then you just have to subtract now.
Since there are 90 degrees, you will subtract 57 from 90. As you subtract, you find that 33 is the difference. Now to check your work, add 33 to 57 to see if it is 90, your full angle.
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90: Full angle
57: Known part
33: Second part (unknown part until solved.)
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90-57=33
33+57=90
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I hope this helps!
-No one