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This problem encourages learners to examine the relationships between the ratios of sides of right angled triangles, and how those ratios vary over changing angles. The aim is to look in detail at the under-pinning structure of the animation.
The coke machine in college takes 50 pence pieces. It also takes a certain foreign coin of traditional design...
The area of a regular pentagon looks about twice as a big as the pentangle star drawn within it. Is it?
Three points A, B and C lie in this order on a line, and P is any point in the plane. Use the Cosine Rule to prove the following statement.