Answer:
D(1, -2)
E(3, -4)
Answer: 21
Step-by-step explanation:
k(x) =x^3-2x
k(3) =3^3-2*(3)
k(3) =27-6
k(3) = 21
Answer: Angle 4
The angle of depression is formed by the line of sight and the horizontal line tangent to the top of the observer.
