Mathematics Question and Solution
Sir Mike Ambrose is the author of the question.
Let the side of the regular nonagon be 1 unit.
Therefore;
Length Green is;
((1+2sin50)sin20/sin80) + √(1.08506357513²+1²)
= 0.87938524157 + 1.47558902208
= 2.35497426365 units.
Length Blue is;
√(1.1371580426²+1²-2(1.1371580426)cos100)
= 1.63953019414 units.
It implies;
Length Blue ÷ Length Green to 2 decimal places is;
1.63953019414 ÷ 2.35497426365
= 0.69619877357
≈ 0.70
