т Ван-Обеля
CP/PC1 =CB1/B1A +CA1/A1B =1/2 +1/8 =5/8
т Менелая
CP/PC1 *C1X/XB1 *B1A/AC =1 => 5/8 *C1X/XB1 *2/3 =1 => B1X/XC1 =5/12
CB1/B1A *AX/XP *PC1/C1C =1 => 1/2 *AX/XP *8/13 => AX/XP =13/4
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Verified answer
т Ван-Обеля
CP/PC1 =CB1/B1A +CA1/A1B =1/2 +1/8 =5/8
т Менелая
CP/PC1 *C1X/XB1 *B1A/AC =1 => 5/8 *C1X/XB1 *2/3 =1 => B1X/XC1 =5/12
CB1/B1A *AX/XP *PC1/C1C =1 => 1/2 *AX/XP *8/13 => AX/XP =13/4