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Complementary AnglesFormula, Examples, diagrams and practice problems
Complementary angles are angles whose sum is 90°
Angles a and B on the left are complementary because the two angles add up to 90°.
(By the way,complementary angles do not necessarilly have to be adjacent angles. In other words, complementary angles do not have to be side-by-side. The only requirement to be complementary angles is adding up to 90°.)
Practice Problems
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a in the picture on the left?
x=30°
