Question

Solve the right angle trig. round to the nearest tenth.

Answer 1

x ≈ 16.5

General Formulas and Concepts:

Pre-Algebra

• Equality Properties

Geometry

• [Right Triangles Only] cos∅ = adjacent over hypotenuse

Explanation:

Step 1: Define

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

Step 2: Identify Variables

POV from the angle

Angle = 38°

Adjacent Leg = x

Hypotenuse = 21

Step 3: Solve for x

1. Substitute [cosine]: cos38° = x/21
2. Isolate x: 21cos38° = x
3. Evaluate: 16.5482 = x
4. Rewrite: x = 16.5482
5. Round: x ≈ 16.5