(a(i))[2]
Calculate the length of $AB$.
(a(ii))[3]
Calculate the value of $\angle ABC$.
(b)[3]
For triangle $PQR$, $PQ = 7\text{ cm}$, $PR = 9\text{ cm}$ and $\angle PQR = 65^\circ$. Calculate $\angle PRQ$.
Mathematics 4024 · O Level · Non-right-angled triangles
Non-right-angled triangles — practice question
ABCDE is a pentagon that has one line of symmetry. $BC = DE = 10\text{ cm}$, $DC = 30\text{ cm}$ and $\angle BCD = \angle CDE = 90^\circ$. The minimum distance from $A$ to $DC$ is $22\text{ cm}$.