Cosine equations

I'm taking a College Algebra course online. I love ❤ this app, thanks but I hope next time will show every steps in calculating answers. Do you like spending hours on one math problem? Me neither, thats why you should get this app, its amazing, it gives answers and can solve problems in many ways/methods.

Try to use it. Helped me through college and highschool. Plus its free and nothing horrible other than very unobtrusive ads, take a pic of the problem and its calculated for you right away, it's great! It doesn't just give you the answer, but it shows step-by-step what to do! And though it's basically getting the answer with the click of a button, it still teaches the user how to do it! There's an infinitesimal amount of reasons why I wouldn't use this app if I'm having trouble with a problem! ^w^.