Posted by A Danesh on December 14, 19103 at 16:41:43:
Triagonometry-- Sin, Cos, Tang, Cotang
Cotang = 1/Tang
(Sin)**2 + (Cos)**2 = 1
Tang * Cotang = 1
As long as the triangle has a right Angle of Ninty degree.
In all triangles: Combination of all the three angles is always 180 degree
A triangle that has two of its angles known the third unkown one will be always idenifiable by FORCE for they all must equal 180 degree.
Therefore inequality is superior to equality when it comes to forced identification