1. Közösség
2. Study Group

Hello everyone. So I am dealing with sinusoidal word problems. I know how to get the answers, the only problem is figuring out which answer to use? Like for D(t)=-21cos(2pi/29.5)+384 i got answers ...

1. Közösség
2. Study Group

Hi, hello, so, I am having problems on sinosoidal equations. I have watched the videos but they dont seem to correspond to me? An example is 7cos(9x)-1=1. I know to isolate until I get cos(9x)=2/7....