In this section I show you reflections of the trigonometric graphs of f(x) = sin(x), cos(x) and tan(x).

Reflection in the x-axis:

You should already be familiar with the transformation y = – f(x)

Trigonometry | Transformations of Trig Graphs - Reflection in the x-axis | ExamSolutions - youtube Video

Reflection in the y-axis:

You should already be familiar with the transformation y = f(-x)

Trigonometry | Transformations of Trig Graphs - Reflection in the y-axis | ExamSolutions - youtube Video