An infected first branchial cleft sinus or fistula may cause aural drainage in the absence of otitis media or otitis externa. A child presenting with both a draining ear and a tender mass in the neck may rarely have a first branchial cleft cyst associated with a sinus or fistula tract.
1 What is formed when two complementary angles share one ray? A. the complementary angles form a line with the shared ray B. the complementary angles form a right angle with the shared ray C. the complementary angles form vertical angles with the shared ray D. the complementary angles form an obtuse angle with the shared ray The answer is B right??? Mathematics.
Two angles are Complementary when they. add up to 90 degrees (a Right Angle ). These two angles (40Â° and 50Â°) are Complementary Angles, because they add up to 90Â°: Notice that together they make a right angle . But the angles don't have to be together.