Solving Problems with the Sine and Cosine Functions - Lesson

[@justinchen4184]

At 22:25, shoudn't the equation be "-10cos (1/30 pi x) + 12" because using the d value we know the graph starts from the bottom and increase upward.

[@JeremyKlassenThePiMan]

@MASHKURA TABASSUM TATHOYE you are absolutely correct. That is my mistake. Sorry it took me so long to respond - I never actually saw this comment until today. I don't know why.

[@IODell]

Thank you for this video. Please clarify. I believe the equation at 22:05 should be negative cosine since the rider starts from the lowest point?

[@JeremyKlassenThePiMan]

Oh, you are absolutely correct. The question even states that a

[@IODell]

@@JeremyKlassenThePiManThank you for responding. You have posted very instructive videos which I appreciate.

[@epicsblue5445]

saving my grades