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kirill115 [55]
3 years ago
12

Geometry Help!

Mathematics
2 answers:
oksian1 [2.3K]3 years ago
8 0

Answer:

Step-by-step explanation:

Use the Law of Sines

FE/sin38=18/sin90

FE=18sin38=11.08

DF/sin52=18/sin90

DF=18sin52=14.2

tatuchka [14]3 years ago
3 0

Answer:

  • FE = 11.08, DF = 14.18

Step-by-step explanation:

<u>Use trigonometric ratios:</u>

  • sin = opposite / hypotenuse
  • cos = adjacent / hypotenuse

Apply to the given triangle

<u>Side FE</u>

  • FE / DE = sin 38° (or cos 52°, the value is same)
  • FE / 18 = sin 38°
  • FE = 18 sin 38°
  • FE = 11.08

<u>Side DE</u>

  • DF / DE = sin 52° (or cos 38°, the value is same)
  • DF / 18 = sin 52°
  • DF = 18 sin 52°
  • DF = 14.18
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