A right triangle is drawn on a coordinate plane with a line drawn from the right angle that is perpendicular to the hypotenuse. the hypotenuse consists of a short line segment measuring 2 units and a long line segment measuring 30 units. using the geometric mean, what is the distance of the short leg to the original triangle?

1 answer

To find the distance of the short leg of the right triangle to the original triangle in the scenario you described, we can use the geometric mean.

Let's denote the lengths of the segments of the hypotenuse:

  • The short segment of the hypotenuse \( a = 2 \) units.
  • The long segment of the hypotenuse \( b = 30 \) units.

The drawing suggests that we have a right triangle \( \Delta ABC \) with right angle \( C \) and hypotenuse \( AB \). A perpendicular line is dropped from point \( C \) to the hypotenuse \( AB \), creating two segments of the hypotenuse, \( AD = 2 \) (the short segment) and \( DB = 30 \) (the long segment).

We can compute the length of the altitude \( CD \) from point \( C \) to hypotenuse \( AB \) using the property of the right triangle and the geometric mean:

\[ CD^2 = AD \cdot DB \]

Substituting in the known values:

\[ CD^2 = 2 \cdot 30 = 60 \]

To find \( CD \), we take the square root of both sides:

\[ CD = \sqrt{60} = \sqrt{4 \times 15} = 2\sqrt{15} \]

Now, to find the distance from the right angle \( C \) to the hypotenuse, which is represented by the length \( CD \), we conclude that:

\[ \text{Distance} = CD = 2\sqrt{15} \]

Thus, the distance from the short leg to the original triangle (the length of the altitude) is \( \approx 7.75 \) units.

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