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Maths Made Easy TMUA Paper 1 · Q15

Paper 1GeometrySequences & series

The lengths of a triangle's sides follow a geometric progression (common ratio rr). It follows that:

A1<r<1+521<r<\frac{1+\sqrt5}{2}
B0<r<1+520<r<\frac{1+\sqrt5}{2}
C0<r<1−520<r<\frac{1-\sqrt5}{2}
D21+5<r<1+52\frac{2}{1+\sqrt5}<r<\frac{1+\sqrt5}{2}
E1+52<r<2\frac{1+\sqrt5}{2}<r<2

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