two angles are called complementary angles if they add up to 90 degrees, right?

then what about 110 and -20? are they complementary? or complementary angles have to be both positive?

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- Jul 16th 2010, 07:18 AMKat-Mcomplementary angles
two angles are called complementary angles if they add up to 90 degrees, right?

then what about 110 and -20? are they complementary? or complementary angles have to be both positive? - Jul 16th 2010, 07:24 AMProve It
When dealing with complementary angles, it's actually their magnitudes (sizes) that have to add to .

- Jul 16th 2010, 07:27 AMKat-M
- Jul 16th 2010, 07:27 PMProve It
Yes. If you were to draw both on the unit circle, you would have a angle.