Challenge Level

Which is larger cos(sin x) or sin(cos x) ? Does this depend on x ?

Challenge Level

Draw graphs of the sine and modulus functions and explain the humps.

Challenge Level

Can you find a way to prove the trig identities using a diagram?

Challenge Level

In this short challenge, can you use angle properties in a circle to figure out some trig identities?

Challenge Level

Can you justify this equation involving three angles?