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In the figure shown, which part of angles must be complementary?

In the figure shown, which part of angles must be complementary?-example-1
User Per Knytt
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complementary angles are any 2 adjacent angles that make up 90°

knowing this, we see <COB is 90°, so now we just look for the 2 angles inside of it

<COD & <DOB
User Hanumath
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