C-09-Q117: In the geometric proof for $30^\circ$ and $60^\circ$, $\triangle OPQ$ …

C-09-Q117: In the geometric proof for $30^\circ$ and $60^\circ$, $\triangle OPQ$ … | প্রশ্ন করি

In the geometric proof for 30∘30^\circ30∘ and 60∘60^\circ60∘, △OPQ\triangle OPQ△OPQ is—