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Step2247 [10]
2 years ago
9

Is this correct if not why !!!!!!!

Mathematics
2 answers:
stich3 [128]2 years ago
4 0

Answer:

x ≈ 61.4

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos71° = \frac{adjacent}{hypotenuse} = \frac{20}{x} ( multiply both sides by x )

x × cos71° = 20 ( divide both sides by cos71° )

x = \frac{20}{cos71} ≈ 61.4 ( to the nearest tenth )

nika2105 [10]2 years ago
3 0
<h3>Answer:  61.4</h3>

====================================================

Explanation:

Use the cosine ratio to get the following,

cos(angle) = adjacent/hypotenuse

cos(71) = 20/x

x*cos(71) = 20

x = 20/cos(71)

x = 61.431 approximately

x = 61.4

Notes:

  • The hypotenuse is always the longest side of any right triangle, so x must be larger than 20.
  • Make sure your calculator is in degree mode.
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