Rhombus area (trigonometric function)

Description

A rhombus (◊), plural rhombi or rhombuses, is a simple (non-self-intersecting) quadrilateral all of whose four sides have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length.
The area of a rhombus,can be calculated by the side and the sinus of any angle of the rhombus.