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VTMO 2013 — Grade 7 — semifinal Question 3

VTMO · VTMO 2013 — Grade 7 — semifinal

Question 3

Triangle $ABC$ has angle $A = 3 B = \frac{C}{2}$. Find $A$.
  1. $30$
  2. $36$
  3. $54$
  4. $60$
  5. $90$