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.
Get a Tutor. Definition: Any two angles are called Complementary angles when they add up to 90Â°. When two angles add to 90Â°, we say that the angles are âComplementâ to each other. In the pair of Complementary angles if one angle is xÂ°, then its Complement is an angle of (90 - x)Â° . From the above figures, we have $\angle$ABD and $\angle$DBC are complementary because 30Â° + 60Â° = 90Â°. $\angle$FGH and $\angle$IJK are complementary because 40.2Â° + 49.8Â° = 90Â°.