Anna F. DeJarnette, Students' Conceptions of Sine and Cosine Functions When Representing Periodic Motion in a Visual Programming Environment, Journal for Research in Mathematics Education, Vol. 49, No ...

CSS, which stands for Cascading Style Sheets, or the language that styles and arranges how page elements appear on a website, will get support for trigonometry functions such as sine, cosine ...

These identities are particularly useful because they allow you to express any trigonometric function in terms of sine and cosine – often the key to solving complex problems.