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CMEP Monthly Feature Oct 2015
These CMEP resources explore the proof and use of trigonometric identities.
Trig Countdown
Age
16 to 18
Challenge Level
A game for one or more players in which you make a target value by building a trig expression
Inspecting Identities
Age
16 to 18
Challenge Level
Using trig identities to help sketch graphs of functions
Proving Half-angle Formulae
Age
16 to 18
Challenge Level
Can you find a geometric proof of these half-angle trig identities?
$t$ for tan
Age
16 to 18
Challenge Level
Can you find a geometric proof for some $\tan\theta$ trig identities?