Two angles in a triangle are 63° and 57°. The ratio of 3rd angle to the first 2 should be

Two angles in a triangle are 63° and 57°. The ratio of 3rd angle to

1.	Two angles in a triangle are 63° and 57°. The ratio of 3rd angle to the first 2 should be
A.	3 : 4
B.	2 : 1
C.	1 : 2
D.	5 : 6
Answer» D. 5 : 6