Respuesta :

thebecks

Answer:

j = 17.32 sq rt 3  or   30

Step-by-step explanation:

sin 60 = j/20sq rt 3

0.8660 = j/20sq rt 3

j = 17.32 sq rt 3

Answer:

Step-by-step explanation:

cos30 = j / 20√3

j = (20√3)cos30

j = (20√3)(½√3)

j = 30