Question Number 189564 by Rupesh123 last updated on 18/Mar/23
Answered by HeferH last updated on 18/Mar/23
$$\alpha\:+\:\mathrm{67}°\:=\:\mathrm{180}° \\ $$$$\alpha\:=\:\mathrm{113}° \\ $$
Commented by HeferH last updated on 18/Mar/23
Commented by Rupesh123 last updated on 19/Mar/23
Excellent!