Your Solutions - Stage 4 & 5

Square It

Age 11 to 16
Challenge Level

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

Parallelogram It

Age 11 to 16
Challenge Level

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.

Rhombus It

Age 11 to 16
Challenge Level

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.

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?

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?

Degree Ceremony

Age 16 to 18
Challenge Level

Can you find the sum of the squared sine values?

Loch Ness

Age 16 to 18
Challenge Level

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

Making Waves

Age 16 to 18
Challenge Level

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

Tri-angled Trig

Age 16 to 18
Challenge Level

Can you justify this equation involving three angles?