Which of the following is a zero of the function g(x)= x(x+5)(x−9)?

7. A ≈ 60.1°

8. B ≈ 34.0°

9. C ≈ 33.1°

Step-by-step explanation:

7.

The Law of Sines states that for a triangle with lengths a, b, and c and angles A, B, and C: .

Here, we can say that a = 7, b = 8, and B = 82, and we want to find A. Plug these values in:

Solve for A:

A ≈ 60.1°

8.

Again, use the Law of Sines as above:

Solve for B:

B ≈ 34.0°

9.

Use the Law of Sines as above:

Solve for C:

C ≈ 33.1°