Traditional Culture Encyclopedia - The 24 Solar Terms - Shadow length and solar terms

Shadow length and solar terms

AB= 10，∠BD=60，∠C=45

Making AD⊥CB extension line in d.

∫∠ABD = 60

∴∠DAB=30

∴BD= 1/2AB=5

pythagorean theorem

AD=5√3

∠∠C = 45

∴AD=CD=5√3

∴BC=5√3-5

The length of the shadow is 5√3-5 meters.

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