Question

Aidez moi svppppppppp

Answer 1

13.8cm

Explanation:

angle A = 180 - angle B - angle C = 180 - 90 - 74 = 16°

AC/sin 90 = 3.8/sin 16

AC = (3.8 sin 90) / sin 16

= 13.786 cm

= 13.8cm (à un dixième)