Respuesta :

i guess you mean  4/5  and 3/5

this is  a right angled triangle with side 3-4-5  so 5 is the hypotenuse

sin x =  opp / hyp  = 4/5 so the opposite side is 4
cos x = adj/hyp = 3/5 so the adjacent side = 3

so tan x =  opp/adj =  4/3

Answer: 4/3

Step-by-step explanation: I got it right on the test:)