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Tricky Trigonometry

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.
Can You Find... Trigonometry Edition link

Can You Find... Trigonometry Edition live

Stage: 5 Challenge Level: Challenge Level:1

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

Equation or Identity (1) link

Equation or Identity (1) live

Stage: 5 Challenge Level: Challenge Level:1

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

Equation or Identity (2) link

Equation or Identity (2) live

Stage: 5 Challenge Level: Challenge Level:1

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

Have a Sine link

Have a Sine live

Stage: 5 Challenge Level: Challenge Level:1

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