You may think you have a pretty good grasp of the basics of trigonometry... These CMEP resources invite you to look a little more closely at the familiar trig functions and learn some interesting new ideas.

Challenge Level

What graphs can you make by transforming sine, cosine and tangent graphs?

Challenge Level

Which of these equations concerning the angles of triangles are always true?

Challenge Level

Here are some more triangle equations. Which are always true?

Challenge Level

There's much more to trigonometry than sin, cos and tan...