Answer:
If you're talking about things like Algebra and Geometry, its Geometry
If you're not, can you be more specific ? :D
Geometry (trigonometry)
Step-by-step explanation:
Trigonometry is the branch of mathematics concerned with specific functions of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry which I believe is the problem you are on.
Hope this helps <3
