Dharma trikona-Lagna ,5th & 9th houses.
Artha trikona-2nd ,6th & 10th houses.
Kama trikona-3rd, 7th& 11th houses
Moksha trikona-4th ,8th & 12th houses.
Dharma trikona are houses of rigteous deeds. lords of these houses are helpful in making life a success they may be called sadhakas. Houses in opposition to lagan , 5th & 9th are 7th .11th & 3rd forming kama trikona , if dharma helps kama or vasana ( lust) obstructs thus badhaks . For moveable signs 5th house & lords are best helpful and therefore the opposite 11 th house and its lord is badhak. For dual signs lagan and lagnesh are most helpful and therefore the opposite 7 th is badhak. For fixed signs 9th house and 9th lord are most helpful and thus not deterrent as mistaken by some others , therefore the opposite house 3 and its lord are the badhaks .
SANI IS BADHAKESH
for TAURUS LAGNA SANI ALSO IS CONSIDERED THE BEST YOGAKARAKA .
Example 2---- LK Advani