Respuesta :

Answer:

[tex]2\sqrt{3}.[/tex]

Step-by-step explanation:

1. the rule: tan(AMR)= AR/AM or tan(AMR)=AR/x.

If to substitute the values of tan(AMR), AR, then

√3=6/x;

2. according to the previous step if 6/x=√3, then x=6/√3=2√3.