The expression that represents the approximate length of BC is; A: (3) sin(66)/sin (38)
Trigonometric Ratios
From the given triangle ABC, we see that;
∠A = 66°
∠C = 38°
AB = 3
Thus using sine rule, we have;
AB/sin C = BC/sin A
3/sin 38 = BC/sin 66
BC = (3sin 66)/sin 38
BC = 4.45
Read more about Sine rule at;https://brainly.com/question/4372174
