Question Number 166442 by cortano1 last updated on 20/Feb/22
Answered by bobhans last updated on 20/Feb/22
$$\mathrm{x}=\mathrm{12}° \\ $$
Answered by som(math1967) last updated on 20/Feb/22
$$\angle{DAE}=\mathrm{60} \\ $$$$\angle{DAC}=\mathrm{60}−\mathrm{3}{x} \\ $$$$\therefore\:\mathrm{7}{x}=\mathrm{60}+\mathrm{60}−\mathrm{3}{x} \\ $$$${x}=\mathrm{12} \\ $$