Respuesta :

Answer:

cosA = [tex]\frac{3}{5}[/tex]

Step-by-step explanation:

cosA = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AB}{AC}[/tex] = [tex]\frac{30}{50}[/tex] = [tex]\frac{3}{5}[/tex]