X2964

TRILINEAR PRODUCT X61*X62

< A B C >: Reference Triangle △ABC [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 1, 21 }: Central Line L(1, 21) { 484, 580 }: Central Line L(484, 580) { 36, 1399 }: Central Line L(36, 1399) { 109, 1393 }: Central Line L(109, 1393) { 162, 2166 }: Central Line L(162, 2166) { 163, 2179 }: Central Line L(163, 2179) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_2216 = -ISOCONJUGATE OF X(570) (0.6037, 0.2921) X_1 = INCENTER (0.5714, 0.2333) X_21 = SCHIFFLER POINT (0.5287, 0.1771) X_484 = 1st EVANS PERSPECTOR (2.0952, 3.0327) X_580 = ORTHOGONAL OF X(284) (0.7089, 0.4470) X_36 = INVERSE-IN-CIRCUMCIRCLE OF INCENTER (1.3333, 1.6330) X_1399 = -BETH CONJUGATE OF X(35) (0.6178, 0.2762) X_109 = Ψ(INCENTER, CIRCUMCENTER) (0.3636, 0.5938) X_1393 = -BETH CONJUGATE OF X(5) (0.6196, 0.3615) X_162 = CEVAPOINT OF X(108) AND X(109) (0.4897, 0.6018) X_2166 = -ISOCONJUGATE OF X(50) (0.9476, -0.1665) X_163 = TRILINEAR PRODUCT X(6)*X(110) (0.3174, 0.5883) X_2179 = -ISOCONJUGATE OF X(95) (0.6272, 0.3514) X_2964 = TRILINEAR PRODUCT X(61)*X(62) (0.6488, 0.3350) A B C X2216 X1 X21 X484 X580 X36 X1399 X109 X1393 X162 X2166 X163 X2179 X2964 (a, b, c) = (5, 6, 7) | AB = 1

X2964 (TRILINEAR PRODUCT X61*X62) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

Constructed Elements

Trilinears: \(\sin(A + \pi /6) \sin(A - \pi /6) : :\)
Search Value (6, 9, 13): \(-0.561343491062\)
▸ Alternate Coordinates3 forms
  • Trilinears: \(a^{2} - R^{2} : :\) (C. Lozada, 9/07/2013)

  • Trilinears: \(\cos^{2} A - 3 \sin^{2} A : :\)

  • Trilinears: \(4 \sin^{2} A - 1 : :\)

▸ Incident Central Lines9 lines

{1, 21}, {35, 2361}, {36, 1399}, {109, 1393}, {162, 2166}, {163, 2179}, {484, 580}, {2148, 2180}, {2216, 2962}

▸ Functional Relations3 relations

Notes

Let OAOBOC be the Kosnita triangle. Let A″ be the trilinear product of the circumcircle intercepts of line OBOC. Define B″ and C″ cyclically. The lines AA″, BB″, CC″ concur in X2964. (Randy Hutson, July 31 2018)