Yes, because their sum is 90 degrees.
Chat with our AI personalities
It is: 60 degrees because complementary angles add up to 90 degrees
Complementary angles add up to 90 degrees. So, 90 - 30 = 60. The complement of 30 degrees is 60 degrees. Supplementary angles have a sum (add up to) 180 degrees.
Supplementary angles add up to 180° → supplementary to 30° is 180° - 30° = 150°. Complementary angles add up to 90° → complementary to 30° is 90° - 30° = 60°.
The phrase "complementary line" usually has to do with business. Example: I have a complementary line of famous products that I am trying to sell to you". Mostly just used in advertising. Most likely, you are asking what a "complementary angle" is? Two complementary angles will always add up to 90 degrees (pi/4). So, if 30 degrees is the starting angle, 60 degrees would be the complementary angle.
The sum of two complementary angles is 90.E.g. 30 degrees and 60 degrees are each others complementary angles.The sum of two supplementary angles is 180.E.g. 105 and 75 are each others supplementary angles.Supplementary angles are those whose angles add up to 180 degrees. Complementary angles are those whose angles add up to 90 degrees.