Question Number 186061 by Rupesh123 last updated on 31/Jan/23
Answered by HeferH last updated on 31/Jan/23
Commented by HeferH last updated on 31/Jan/23
$$\mathrm{sin}\:\mathrm{30}°\:=\:\frac{{PM}}{\mathrm{7}} \\ $$$$\frac{\mathrm{1}}{\mathrm{2}}\:=\:\frac{{PM}}{\mathrm{7}}\:\Rightarrow\:{PM}\:=\:\frac{\mathrm{7}}{\mathrm{2}}\: \\ $$