Question

Use a calculator to find the value of the acute angle 0, to the nearest degree.
Cos0=0.3667

Answer 1

θ ≈ 68°

General Formulas and Concepts:

Pre-Algebra

• Equality Properties

Trigonometry

• Trig Inverses

Explanation:

Step 1: Define

cosθ = 0.3667

Step 2: Solve for θ

1. Trig inverse: θ = cos⁻¹(0.3667)
2. Evaluate: θ = 68.4878°
3. Round: θ ≈ 68°