You’ll be able to graph sine and cosine graphs like y=cos (x) or y=sine (x) on a graphing calculator — even simultaneously, for some. Both the sine and cosine functions appear as waves that ...

Dorothea D. Bone, SINE AND COSINE FUNCTIONS WITH A CALCULATOR, The Mathematics Teacher, Vol. 73, No. 7 (October 1980), pp. 521-524, 529 ...

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 ...

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.