1 Arctan(x) Calculator | Inverse tangent calculator
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Arctan Calculator

Online arctan(x) calculator. Inverse tangent calculator.

arctan
Angle in degrees:
°
Angle in radians:
rad
Calculation:

Tangent calculator ►

Arctangent definition

The arctangent function is the inverse function of y = tan(x).

arctan(y) = tan-1(y) = x+ kπ

For every

k = {...,-2,-1,0,1,2,...}

 

For example, If the tangent of 45° is 1:

tan(45°) = 1

Then the arctangent of 1 is 45°:

arctan(1) = tan-1(1) = 45°

Arctangent table

y x = arctan(y)
degrees radians
-1.732050808 -60° -π/3
-1 -45° -π/4
-0.577350269 -30° -π/6
0 0° 0
0.577350269 30° π/6
1 45° π/4
1.732050808 60° π/3

Arctan on calculator

In order to calculate arctan(y) on a calculator:

  1. Press shift+tan buttons.
  2. Enter the angle.
  3. Press the = button.

Tangent calculator ►

 

See also
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MATH CALCULATORS
Frequently, when comprehending conditions, the accompanying changes are utilized: Replacement of articulations that are in the left and right sides of the condition, indistinguishably equivalent articulations. Adding a similar number to the two sides of the condition or subtracting a similar number from the two sides of the condition. Adding to the two sides of the condition of a similar articulation or subtracting from the two sides of the condition of a similar articulation. The exchange of the term starting with one piece of the condition then onto the next with the sign changed to the inverse. Increase or separation the two sides of the condition by the equivalent non-zero number. Augmentation or division of the two sides of the condition by a similar articulation.

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