Arctan (Noun)
Meaning
The inverse function of the tangent; the angle that has a tangent equal to a given number.
Classification
Nouns denoting relations between people or things or ideas.
Examples
- In trigonometry, the arctan of a number is the angle in radians between the positive x-axis of a plane and the point given by the x-coordinate and the y-coordinate on it.
- The result of the function arctan x gives the angle in the correct quadrant.
- To find an angle with a tangent of 1, you would take the arctan of 1.
- Using a calculator, we find that the arctan of 5.6 is approximately 79.7 degrees.
- If we're looking at the point (3,4) we can take the arctan of 4/3 to find the angle that line makes with the x-axis.