# Pythagorean Theorem

## The pythagorean theorem used for squaring

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The Pythagorean theorem often used

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

can be expressed as

*C = (A ^{2} + B^{2})^{1/2} (1)*

### Example - Determine the length of the Hypotenuse - C

### 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)*

### The Sine Rule

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

## Related Topics

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