Inverse Tangent Calculator
Trigonometric inverse tangent calculator
# What is inverse tangent?
Inverse tangent is the inverse of basic tan function. In the tan function, value of angle θ is taken to give the ratio opposite/adjacent. However, inverse tan function takes the ratio opposite/adjacent and gives angle θ.
tan-1 (opposite/adjacent) = θ
Inverse tangent symbol
Inverse tangent is represented as tan-1 or arctan.
# Inverse tangent rule
The inverse tan rule is given as:
y = tan-1 (x)
Formula
tan-1(-x) = -tan-1(x), where x ∈ R
Inverse tangent derivative
The derivative of inverse tangent function is first-order derivative. It is given as:
dy/dx = 1 / 1 + x2