Arctangent — Precalculus, what it means and where it is taught
The inverse of tangent, restricted to outputs strictly between -90° and 90°.
Taught in Precalculus.
Where it is taught
What it rests on
Work through these first if this one does not settle.
- Tangent — tan θ = oppositeadjacent.
Practise this idea
1 question in the course bank use Arctangent, in Inverse Trigonometric Functions.
Problem 1
Find arctan(-1) in degrees.
Worked answer
-45
Reference angle 45°
Negative, so -45°