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In the diagram below, BC is an altitude of ABD. To the nearest whole unit, what is the length of CD?

In the diagram below BC is an altitude of ABD To the nearest whole unit what is the length of CD class=

Respuesta :

The altitude is the mean proportional between the left and right parts of the hyptenuse

DC/37 = 37/53  ⇒ DС = (37*37)/53 ≈ 26

Answer: 26

The length of the CD is approximately equal to 26.

Pythagorean theorem

Using the Pythagorean theorem,

The Pythagoras theorem equation exists expressed as, [tex]c^{2} = a^{2} + b^{2}[/tex], where 'c' be the hypotenuse of the right triangle and 'a' and 'b' exists the other two legs.

To find BA:

Where, BA = [tex]$\sqrt{37^{2}+53^{2}}=\sqrt{4178}$[/tex]

Consider BC = x,

To find the length of [tex]$B D: \sqrt{x^{2}+37^{2}}$[/tex]

Since DBA exists in a right triangle,

[tex]$D A^{2}=B D^{2}+B A^{2}$[/tex]

Substitute the values in the above equation, and we get

[tex]$(x+53)^{2}=\sqrt{4178}^{2}+{\sqrt{x^{2}+37^{2}}}^{2}$[/tex]

Expanding the above equation, we get

[tex]$x^{2}+106 x+2809=x^{2}+5547$[/tex]

Simplifying the equation,

106x = 2736

Divide 2736 by 106, and we get

x = 25.8 approximately 26.

Therefore, the length of the CD is approximately equal to 26.

To learn more about the Pythagorean theorem,

https://brainly.com/question/20545047

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