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p = 90° - 36°
p = 54°
38° + 2q = 90°
2q = 90° - 38°
2q = 52°
q = 52°: 2
q = 26°
b) < DBA = 90° + 54°
= 144°
< RQS = 2. q
= 2. 26°
= 52°