SQUARE ROOT OF 3

{| border="1" style="float: right; border-collapse: collapse;"
| colspan="2" align="center" | List of numbers - Irrational numbers
√2 - φ - sqrt{3} - √5 - e - π
|-
|Binary
| 1.1011101101100111101...
|-
| Decimal
| 1.7320508075688772935...
|-
| Hexadecimal
| 1.BB67AE8584CAA73B...
|-
| Continued fraction
| 1 + rac{1}{1 + rac{1}{2 + rac{1}{1 + rac{1}{2 + ldots}}}}
|}
The 'square root of 3' is the positive real number that, when multiplied by itself, gives the number 3. It denoted by
:sqrt{3}.
Its numerical value is approximately 1.73205 .
The square root of 3 is an irrational number. It is also known as 'Theodorus' constant', named after Theodorus of Cyrene.

Contents
Geometry
See also
References
External links

Geometry


The square root of 3 is equal to the length across the flat sides of a regular hexagon with sides of length 1.

If an equilateral triangle (equilateral polygon with three sides) with sides of length 1 is cut into two equal halves, by bisecting an internal angle across to make a right angle with one side, the right angle triangle's hypotenuse is length one and the sides are of length 1/2 and sqrt{3}/2. From this the trigonometric function tangent of 60 degrees equals sqrt{3}.
It is the distance between opposite flat sides of a regular hexagon with sides of length 1.
It is the length of the diagonal of a unit cube.
The shape Vesica piscis has a major axis: minor axis ratio equal to the square root of three, this can be shown by constructing two equilateral triangles within it.

See also



Square root of 2

Square root of 5

References



★ M. F. Jones, "22900D approximations to the square roots of the primes less than 100", ''Math. Comp'' '22' (1968): 234 - 235.

★ H. S. Uhler, "Approximations exceeding 1300 decimals for sqrt{3}, rac{1}{sqrt{3}}, sin( rac{pi}{3}) and distribution of digits in them" ''Proc. Nat. Acad. Sci. U. S. A.'' '37' (1951): 443 - 447.

★ Wells, D. ''The Penguin Dictionary of Curious and Interesting Numbers'' Revised Edition. London: Penguin Group. (1997): 23

External links



Proof that square root of 3 is irrational

Theodorus' Constant at MathWorld

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