samantha101106 samantha101106
  • 14-01-2022
  • Mathematics
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Find the value of x round to the nearest 10th

Find the value of x round to the nearest 10th class=

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sqdancefan
sqdancefan sqdancefan
  • 19-01-2022

Answer:

  x ≈ 12.9

Step-by-step explanation:

In relation to the angle in this right triangle, the sides marked are the adjacent side and the hypotenuse. The relevant trig relation is ...

  Cos = Adjacent/Hypotenuse

  cos(72°) = 4/x

Multiplying by x/cos(72°), we have ...

  x = 4/cos(72°)

  x ≈ 12.9

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