Can you sketch this tricky trig function?
Trigonometry, circles and triangles combine in this short challenge.
Can you prove this formula for finding the area of a quadrilateral from its diagonals?
How would you design the tiering of seats in a stadium so that all spectators have a good view?
Can you deduce the familiar properties of the sine and cosine functions starting from these three different mathematical representations?
An equilateral triangle is constructed on BC. A line QD is drawn, where Q is the midpoint of AC. Prove that AB // QD.