King of Equations is an entitlement globally attributed to Bibhorr formula . Post the publications by Oodham Research Team, the formula soon globally achieved the name King of Equations. Since then various books have been published in the name of this title. 
About the formula
Bibhorr formula (also called King of Equations ) is a mathematical equation for establishing a relation between the sides and angle of a right triangle . The formula is a simplistic substitution to trigonometry as it is devoid of trigonometric functions . The equation demonstrates the relation of angle with the sides without implementing trigonometric functions. The formula proves useful in applied mathematics and mathematical physics .
Invented by an Indian aerospace engineer and scholar Bibhorr , the equation is notated in Hindi letters. For a right triangle with longest side (Shrav) श्र, medium side (Lambu) लं and shortest side (Chhutku) छ, the angle opposite the lambu ( Bibhorr angle ) बि is given as:
This equation is called Bibhorr formula.
The equation makes use of two constants - 90° or π/2 radian and 1.5. The 90° is a constant angle, denoted by सि and called Bibhorr sthiron. 1.5 is a bare number which has no units and is called Bibhorr constant (denoted by बँ).
The units of Bibhorr angle depend on wheather the sthiron is 90° or (π/2). If Bibhorr sthiron is 90° then Bibhorr angle is in degrees, but if sthiron is (π/2) then obviously the angle would be in radians .