Attend the lectures in class 11 and pay attention. If you do not understand something ask.
TRIGONOMETRY
I taked a class.
The students and teacher of my trig. class
If they put their mind to it, it is not difficult.
11/35
TRIGONOMETRY
Pay attention in class. That is the simplest way.
Attend class and take notes; learn the material; study before the exams; show up to and do the exam.
I taked a class.
Trigonometry
sin2A + cos2A
In Geometry, you learn about triangles. In Trigonometry you learn even more about triangles.
It's a high school/college class wherein you learn about functions, trigonometry, advanced algebra, and many other things in preparation. See Wikipedia for more info.
It depends. Between 9th to 12th.
Learn the subject!
The students and teacher of my trig. class
It depends on what the school prefers. I would think that 9th graders in a school for kids with learning disabilities normally learn Pre-Algebra, or Algebra 1. For a 9th grade class in a mainstream school, I would think that most 9th graders would learn Algebra 1, Geometry, Algebra 2, or Trigonometry. I would think that Trigonometry is mostly for gifted 9th graders.