(a(i))[2]
Find the value of $p$. Give a geometrical reason for your answer.
(a(ii))[2]
Find the value of $q$. Give a geometrical reason for your answer.
(b(i))[1]
Write down the mathematical name of triangle $OHJ$.
(b(ii))[1]
Find the value of $x$.
(b(iii))[3]
Find the value of $y$.