| tan λ : tan α : tan γ = tan (l to x) : tan (a to x) : tan (c to x) |
| = tan β : tan α : tan γ = tan (b to x) : tan (a to x) : tan (c to x) |
| = tan 63° : tan 18° : tan 10° = 1.9626 : 0.3249 : 0.1763 = 11.13 : 1.84 : 1 |
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