Question

What is the length of the unknown side of the right triangle? ( 20​

Answer 1

2) 29

Explanation:

Answer 2

2) 29

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 Triangle Only] Pythagorean Theorem: a² + b² = c²

Explanation:

Step 1: Define

We have a right triangle. We can use PT to find the missing length.

Step 2: Identify Variables

Leg a = 20

Leg b = 21

Hypotenuse c = x

Step 3: Solve for x

1. Substitute: 20² + 21² = x²
2. Exponents: 400 + 441 = x²
3. Add: 841 = x²
4. Isolate x: 29 = x
5. Rewrite: x = 29