Use the cosine ratio to find the value of x, to the nearest tenth.
1 answer:
Answer:
c) 4
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
<u>Trigonometry</u>
- [Right Triangles Only] SOHCAHTOA
- [Right Triangles Only] cosθ = adjacent over hypotenuse
Step-by-step explanation:
<u>Step 1: Identify Variables</u>
Angle θ = 34°
Adjacent Leg = <em>x</em>
Hypotenuse = 4.8
<u>Step 2: Solve for </u><em><u>x</u></em>
- Substitute [Cosine]: cos34° = x/4.8
- Isolate <em>x</em>: 4.8cos34° = x
- Rewrite: x = 4.8cos34°
- Evaluate: x = 3.97938
- Round: x ≈ 4
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