Complementary & supplementary angles

Use your knowledge about complementary and supplementary angles to find missing angles.


If angle, A, O, C is a right angle and m, angle, A, O, B, equals, 60, degree, what is m, angle, B, O, C?
NOTE: Angles not necessarily drawn to scale.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i