For a given right triangle with longest side श्र, medium side लं and shortest side छ, the angle opposite the medium side (Bibhorr angle) बि is given as:
This equation is known as Bibhorr formula. The symbolical notations use Hindi letters and specifically denote the sides.
The use of two constants - 90º or π/2 and 1.5 makes the formula more legible. These constants are known as "Bibhorr sthiron" and "Bibhorr constant" respectively.