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.
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.
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.
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?
Can you find a way to prove the trig identities using a diagram?
In this short challenge, can you use angle properties in a circle to figure out some trig identities?
Draw graphs of the sine and modulus functions and explain the humps.
Which is larger cos(sin x) or sin(cos x) ? Does this depend on x ?