正切对数表(角度)
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log(tan(1.1°)) = -1.71667658421677
log(tan(1.2°)) = -1.67887787890237
log(tan(1.3°)) = -1.64410474571798
log(tan(1.4°)) = -1.61190815282713
log(tan(1.5°)) = -1.58193213723434
log(tan(1.6°)) = -1.55388973861367
log(tan(1.7°)) = -1.5275462419491
log(tan(1.8°)) = -1.50270721723578
log(tan(1.9°)) = -1.47920979722009
log(tan(2.0°)) = -1.45691619502552
特别标注45°附近的对数特性，提供角度互补关系速查（如log(tanθ)与log(tan(90°-θ))的关系），支持导出航海专用对数表格式。