Question

Afla masurile a 2 unghiuri suplementare daca sunt invers proporţionale cu 3 si 7​

Answer 1

$3\angle A = 7\angle B\implies \: \angle A = \frac{7\angle B}{3} \\ \\ \small\angle A + \angle B = 180 \implies \frac{7\angle B}{3} + \angle B = 180 \\7\angle B + 3\angle B = 540 \\ 10\angle B = 540 \\ \implies\angle B = 54 {}^{\circ} \\ \implies \angle A = 126{}^{\circ}$