Respuesta :

The question is incomplete however the complete question is as follows:

Which triangle’s unknown side length measures 7 units?

A) A right triangle with a side length of 5 and hypotenuse with length [tex]\sqrt{74}[/tex].

B) A right triangle with a side length of [tex]\sqrt{18}[/tex] and hypotenuse with length 5.

C) A right triangle with a side length of [tex]\sqrt{6}[/tex]and hypotenuse with length [tex]\sqrt{43}[/tex].

Answer:

Option A

Step-by-step explanation:

Pythagoras theorem can be satisfied by the length of the sides if the triangle is right angle triangle. The mathematical representation is as follows:

          Hypotenuse²= opposite² + adjacent²

According to the option :

Length of side = 5

Hypotenuse = [tex]\sqrt{74}[/tex]

Then,

        [tex]\sqrt{74}^{2}[/tex] = 5²+ adjacent²

         adjacent² = 74 - 25 = 49

         adjacent =[tex]\sqrt{49}[/tex]

         adjacent = 7

Thus, the correct answer is option A.