problem
Favourite
Curved square
Can you find the area of the central part of this shape? Can you do it in more than one way?
problem
Trig identity
In this short challenge, can you use angle properties in a circle to figure out some trig identities?
problem
Calculating with cosines
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?
problem
Favourite
Tangled Trig Graphs
Can you work out the equations of the trig graphs I used to make my pattern?