Respuesta :

Space

Answer:

BA ≈ 1.88

General Formulas and Concepts:

Pre-Algebra

  • Equality Properties

Trigonometry

  • [Right Triangle Trig] sin∅ = opposite over hypotenuse

Step-by-step explanation:

Step 1: Define

We are given a right triangle. We can use trig to find the missing length

Step 2: Identify Variables

POV from angle C

Angle = 28°

Adjacent = BA

Hypotenuse = 4

Step 3: Solve for BA

  1. Substitute [sine]:                     sin28° = BA/4
  2. Isolate BA:                               4sin28° = BA
  3. Evaluate:                                  1.87789 = BA
  4. Rewrite:                                   BA = 1.87789
  5. Round:                                     BA ≈ 1.88

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