ArcCos

ArcCos(expr)

returns the arc cosine (inverse cosine) of expr (measured in radians).

ArcCos(expr) will evaluate automatically in the cases Infinity, -Infinity, 0, 1, -1.

See:

• Wikipedia - Inverse trigonometric functions

Examples

>> ArcCos(0)
Pi/2

>> ArcCos(1)
0

>> Integrate(ArcCos(x), {x, -1, 1})
Pi

Implementation status

• ✅ - full supported

Github

• Implementation of ArcCos

• Rule definitions of ArcCos