Try it yourself:
| @1 |
SQRT2
|
|
| @2 |
sqrt(2)
|
SQRT2 is the dimensionless constant √2, the diagonal length of a unit square. It is irrational and frequently appears in geometry, normalization, and trigonometry.
Use it for 45-degree relationships and compare it with SQRT1_2, its reciprocal. sqrt computes roots generally, while pow verifies the square.
Decimal output is approximate. Keep the symbolic constant when exact cancellation matters, and use simplify for algebraic reduction.
Enter SQRT2 on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.
The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.