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

c) 4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition 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

Substitute [Cosine]:                    cos34° = x/4.8Isolate x:                                      4.8cos34° = xRewrite:                                       x = 4.8cos34°Evaluate:                                      x = 3.97938Round:                                         x ≈ 4