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Use the cosine ratio to find the value of x, to the nearest tenth.
a) 2.7
b) 3.2
c) 4
d) 3.9

Use The Cosine Ratio To Find The Value Of X To The Nearest Tenth A 27 B 32 C 4 D 39 class=

Sagot :

Space

Answer:

c) 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

Step-by-step explanation:

Step 1: Identify Variables

Angle θ = 34°

Adjacent Leg = x

Hypotenuse = 4.8

Step 2: Solve for x

  1. Substitute [Cosine]:                    cos34° = x/4.8
  2. Isolate x:                                      4.8cos34° = x
  3. Rewrite:                                       x = 4.8cos34°
  4. Evaluate:                                      x = 3.97938
  5. Round:                                         x ≈ 4
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