X3559¶
SS(sin A → cos A) OF X333
X3559 (SS(sin A → cos A) OF X333) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3559 = SS(sin A → cos A) OF X_333."""
from __future__ import annotations
from pathlib import Path
import sympy.geometry as spg
from geometor.model import Model
from geometor.etc.ops import (
central_line,
centroid_of,
ceva_conjugate,
circumcenter_of,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03559(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3559 = SS(sin A → cos A) OF X_333 on reference triangle ABC."""
X_1896 = eval_trilinear_point(model, A, B, C, '(sec(A))/(sec(B) + sec(C))', ID="X_1896", classes=["center"])
X_29 = eval_trilinear_point(model, A, B, C, '(sec(A))/(cos(B) + cos(C))', ID="X_29", classes=["center"])
X_3559 = ceva_conjugate(model, A, B, C, X_1896, X_29, ID="X_3559", classes=["selected", "target"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
central_line(model, X_2, X_3, 2, 3)
X_225 = eval_trilinear_point(model, A, B, C, '(sec(A))*(cos(B) + cos(C))', ID="X_225", classes=["center", "incident"])
X_283 = eval_trilinear_point(model, A, B, C, '(cos(A))/(cos(B) + cos(C))', ID="X_283", classes=["center", "incident"])
central_line(model, X_225, X_283, 225, 283, incident=True)
X_318 = eval_trilinear_point(model, A, B, C, '(1 + sec(A))/a**(2)', ID="X_318", classes=["center", "incident"])
X_333 = eval_trilinear_point(model, A, B, C, 'b*c*(b + c - a)/(b + c)', ID="X_333", classes=["center", "incident"])
central_line(model, X_318, X_333, 318, 333, incident=True)
return promote_point_to_top(model, X_3559)
def build_model(
sides: tuple[float, float, float] = (5.0, 6.0, 7.0),
show_guides: bool = False,
) -> Model:
"""Build a `geometor.model.Model` for X_3559 on the given reference triangle."""
model = create_model('X_3559 = SS(sin A → cos A) OF X_333')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03559(model, A, B, C)
return model
if __name__ == "__main__":
here = Path(__file__).resolve().parent
model_acute = build_model((5.0, 6.0, 7.0))
model_acute.save(str(here / "x-03559.json"))
write_center_svg(
model_acute,
here / "x-03559.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)