Question 18
In triangle $ABC$, $BC=10$, $AB=13$, and $\angle ACB=45^\circ$. Find its area.
HKIMO 2017 THPT (Grades 10–12 shared) National Final (Heat) Set 04 Question 18
HKIMO · HKIMO 2017 THPT (Grades 10–12 shared) National Final (Heat) Set 04
HKIMO · HKIMO 2017 THPT (Grades 10–12 shared) National Final (Heat) Set 04