Respuesta :

Answer:

-3/4

Step-by-step explanation:

cos theta = (adjacent /hypothesis) =(-3/4)

Answer:

D

Step-by-step explanation:

(4,-3) lies in the fourth quadrant where cos is positive

cos(θ) = adjacent/hypotenuse

hypotenuse² = 4² + 3² = 25

Hypotenuse = 5

cos(θ) = 4/5