### There are 6 results

Broad Topics >

Pythagoras and Trigonometry > Trigonometry generally

##### Age 16 to 18 Challenge Level:

Can you deduce the familiar properties of the sine and cosine functions starting from these three different mathematical representations?

##### Age 16 to 18 Short Challenge Level:

Can you sketch this tricky trig function?

##### Age 16 to 18 Short Challenge Level:

Trigonometry, circles and triangles combine in this short challenge.

##### Age 16 to 18 Challenge Level:

Can you prove this formula for finding the area of a quadrilateral from its diagonals?

##### Age 14 to 16 Challenge Level:

An equilateral triangle is constructed on BC. A line QD is drawn,
where Q is the midpoint of AC. Prove that AB // QD.

##### Age 14 to 18 Challenge Level:

How would you design the tiering of seats in a stadium so that all spectators have a good view?