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

As usual, I enjoyed this course taught by Dr. Cutrone and learned a lot. Occasionally, though, I felt there was a gap between what was taught and what was tested. Perhaps that was the intent so that learners would push themselves beyond the presented material.

This is the second module of the specialization in calculus, go through these lectures in sequence since the concepts build on each other. The explanations are very clear and even the real world examples are superb. The motivation for learning all these concepts is baked into these lectures through the examples. Would definitely recommend solving the quizzes and sample problems. The professor also explains some historical math while going through the lectures such as where does 360degree come from. Thank you professor for all these lectures.

Instructor quite a good presenter of this material, generally not stiff and pretty colloqial in his language. Made the material interesting and not overy theoretical. I think a couple of the test/quiz questions were not fairly graded ( thought my answer was identical to the shown correct answer); but it was not often enough to be material to my end result. I would certianly recommend this course for the material, and be more likely to take a course with this instructor.

Would have liked more background into range, domain, etc since it was on test questions....

Extremely well taught! Superb explanations and examples.

I enjoyed the course through and through. Joseph is a great instructor. I had not the slightest trouble videos are simple to comprehend and very to the point. I had no question but one which was responded to shortly after I brought it up in the discussion forums. I shall like to recommend this course to a friend.

The course is amazing. It helped me to understand the logic of periodic functions instead only memorize those functions. I think It would be great to provide additional material or books recommendations.

Excellent course in Precalculus, AP Calculus of Periodic Functions and Elementary Trigonometry. It requires a good mathematical background, and it does not include introductory concepts.

This course just like the preceding one is brilliant. After a very very very long time I can finally grasp the concepts undelrying the mathematics I studied at the high school.

The course is challenging. I learned a lot about trigonometric functions and their behavior. I can now understand periodic ODEs better now...

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

It was a fun and tough course on trig functions. The instructor teaches clearly, and I recommend his courses.

Absolutely loved this course. i recommend it to every beginner

Outstanding teacher and well designed online course.

Good foundations well taught.

Not easy, but worth it!

awesome and informative

Very usefull course

TEACHER IS TOO GOOD

it's a hard course

effective course

Hello! I was fascinated by this course, I'm a Senior High School student learning from this course, with the use of Coursera. I actually like the learning methods wherein it has various video lessons to watch and gain knowledge as well as modules. Having an exercise materials such as quizzes and assignment really does helped me to understand furthermore the lessons. I LOVE THIS COURSE!

I wish the forums would be a place of exchange of problems among students and professor.

Of the very few errors in the lectures, posting corrections might be valuable as to avoiding loss of hair.

I love the stories of the Japanese math teacher, cos strong, sine mother take the baby out. look at the moon.

Lectures are excellent. Not enough course material to have problems enough to work through to get proficient so I had to find other resources to work through. If They had about 5x as many problems to solve (usually only 5) prior to the exam that would be great.