## Sine and Cosine Functions

### Reseñas

4.7 (73 calificaciones)

• 5 stars
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JC

10 de abr. de 2021

Excellent course. Trigonometric concepts that, in previous courses, had been intimidating, confusing and tedious became dramatically less so.

TN

18 de mar. de 2023

Thank you very much for your teaching, Sir! Your lectures are always clean and clear. I wish you were my school teacher.

De la lección

Module 3: Sine and Cosine as Periodic Functions

Sine and cosine are now introduced using the unit circle, which is the circle centered at the origin with radius one. This definition of our key periodic functions extends the definition originally introduced with right triangles.

### Impartido por:

• #### Joseph W. Cutrone, PhD

Associate Teaching Professor and Director of Online Programs