SEAMO 2027 - Paper E - SET 01 - Self-study Question 22

Question 22

In triangle $ABC$, $\angle C=3\angle A$, $BC=3$ and $AB=5$. Find $AC$.

1. $\sqrt{\frac{32}{3}}$
2. $5\sqrt3$
3. $8\sqrt2$
4. $\sqrt{\frac{25}{2}}$
5. None of the above