Question Number 75868 by Crabby89p13 last updated on 19/Dec/19
$${PROVE}\:\:{THAT} \\ $$$$ \\ $$$$\mathrm{sin3}°\:\mathrm{sin39}°\:\mathrm{sin75}°\:=\:\mathrm{sin}\:\mathrm{9}°\:\mathrm{sin}\:\mathrm{24}°\:\mathrm{sin}\:\mathrm{30}° \\ $$
PROVE-THAT-sin3-sin39-sin75-sin-9-sin-24-sin-30-