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# Pythagorean Theorem

## Verifying square corners. The Pythagorean theorem often used

• to verify if a corner is square (90 degrees)

and can be expressed as

C2 = A2 + B2                         (1)

(1) can be transformed to express the length of hypotenuse C as

C = (A2 + B2)1/2                                     (1b)

### With A = 5 m and B = 10 m - the length of the hypotenuse - C - can be calculated as

C = ((5 m)2 + (10 m)2)1/2

= 11.2 m

### Squaring a Corner The angle is square (90 degrees) if

• A = 3 (m, ft)
• B = 4 (m, ft)
• C = 5 (m, ft)

### Hypotenuse Calculator

Calculate square triangle hypotenuse - C - length:

A  (m, mm, cm, in, ft)

B (m, mm, cm, in, ft)

### The Sine Rule

A / sin a = B / sin b = C / sin c                          (2)

## Related Topics

• Mathematics - Mathematical rules and laws - numbers, areas, volumes, exponents, trigonometric functions and more.

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## Citation

• Engineering ToolBox, (2010). Pythagorean Theorem. [online] Available at: https://www.engineeringtoolbox.com/pythagorean-theorem-d_1713.html [Accessed Day Mo. Year].

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