Respuesta :

gmany

Answer:

altitude = 5

Step-by-step explanation:

Look at the picture.

Use the Pythagorean theorem:

[tex]a^2+12^2=13^2[/tex]

[tex]a^2+144=169[/tex]               subtract 144 from both sides

[tex]a^2=25\to a=\sqrt{25}\\\\a=5[/tex]

Ver imagen gmany