Respuesta :

Answer:

1. Cos θ = 0.89

θ = 27.13 degrees

2. Cos θ = 0.729

θ = 43.20 degrees

Explanation:

Given:

1. Cos θ = 0.89

θ = arccos(0.89)

= 27.13 degrees

2. Cos θ = 0.729

θ = arccos(0.729)

= 43.20 degrees