**System Information**
Operating system: Linux-4.18.0-21-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.14
**Blender Version**
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-05 19:33, hash: `rB8fa65ed31b7f`
Worked: (optional)
**Short description of error**
Driver editor doesn't recognize some trigonometric functions.
**Exact steps for others to reproduce the error**
I don't know if this has changed or is a missing feature or a bug.
Reproduction steps:
1. Create any (mesh-) object in any file
2. Assign driver to e.g. the y-angle of the object
3. Under "Scripted Expression" use the x-location of the same object as input for the variable "var"
The expressions **sin(var)** or "cos(var)" work but not **asin(var)** or **arcsin(var)** and similar functions although it did work in 2.79 according to the documentation. The Error **ERROR: Invalid Python expression** appears.