Question

Can any guide me to the right answer? It’s not 48 or 48.5

Answer 1

59.8

h = height of girl

cos 39 = adjacent (h) /hypotenuse (77 in)

h = 77 cos 39

h = 59.8 in

You used sin instead of cosine, notice that the angle is placed on the top corner, meaning her height is the length adjacent to the angle, not opposite.