Slices of pi How are $\sin x$, $\cos x$ and $\tan x$ related to each other? Can you make sense of the the 'slices'? Age 16 to 18 Challenge level Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Explaining, convincing and proving Being curious Being collaborative Being resourceful Being resilient Problem Problem Try the problem Slices of pi on Underground MathematicsĀ