sin36

sin36 refers to the trigonometric value of the sine function evaluated at 36 degrees. This is a specific and well-known value in trigonometry. The exact value of sin36 degrees can be expressed using radicals and is equal to the square root of (10 - 2 * sqrt(5)) divided by 4. This value is irrational and cannot be represented as a simple fraction. The value of sin36 degrees is approximately 0.587785. This value is important in various geometric calculations and constructions, particularly those involving regular pentagons. The construction of a regular pentagon using ruler and compass relies on the golden ratio, and the sine of 36 degrees is directly related to this ratio. In advanced mathematics and physics, this precise value can be useful when dealing with problems that exhibit pentagonal symmetry or involve angles that are multiples of 36 degrees.