Your Post-16 Solutions

Degree Ceremony

Age 16 to 18
Challenge Level

Can you find the sum of the squared sine values?

Making Waves

Age 16 to 18
Challenge Level

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

Loch Ness

Age 16 to 18
Challenge Level

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

T for Tan

Age 16 to 18
Challenge Level

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

Trig Identity

Age 16 to 18
Challenge Level

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

Calculating with Cosines

Age 14 to 18
Challenge Level

If I tell you two sides of a right-angled triangle, you can easily work out the third. But what if the angle between the two sides is not a right angle?

Tri-angled Trig

Age 16 to 18
Challenge Level

Can you justify this equation involving three angles?

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
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