CREATE TABLE table_287159_1 (other_abbreviation VARCHAR2, brightest_star VARCHAR2)

What is the other abbreviation of the constellation that has trianguli as its brightest star?
SELECT other_abbreviation FROM table_287159_1 WHERE brightest_star = "β Trianguli"
SELECT "other_abbreviation" FROM "table_287159_1" WHERE "brightest_star" = "β Trianguli"