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Find the values of x , y and z .

Find the values of x , y and z .-example-1

1 Answer

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Answer:

  • x = 144
  • y = 60
  • z = 156

Explanation:

Given two segment measures in a right triangle diagram, you want the values of the other measures.

Pythagorean theorem

The Pythagorean theorem can be used to find y:

BC² = BD² +CD²

65² = y² +25²

y² = 65² -25² = 3600

y = √3600 = 60

Similar triangles

The proportionality of corresponding sides in similar triangles can be used to find the remaining measures.

short side/hypotenuse = 25/65 = 65/(25+x)

25 +x = 65²/25 = 169

x = 144

And for z, we can use ...

long side/hypotenuse = AB/AC = BD/BC

z/169 = 60/65

z = 169(12/13) = 156

The triangle measures are ...

  • x = 144
  • y = 60
  • z = 156
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