Question

Solve for X, Round to the nearest 10th of a degree if necessary 43 87

Answer 1

x° ≈ 60.4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Equality Properties

Trigonometry

• [Right Triangles Only] SOHCAHTOA
• [Right Triangles Only] cosθ = adjacent over hypotenuse
• Inverse Trig

Explanation:

Step 1: Define

Identify variables

Angle θ = x°

Adjacent Leg = 43

Hypotenuse = 87

Step 2: Solve for x

1. Substitute in variables [cosine]: cos(x°) = 43/87
2. Inverse Trig: x° = cos⁻¹(43/87)
3. Evaluate: x° = 60.3795
4. Round: x° ≈ 60.4