Post a New Question

posted by Anonymous on Thursday, August 5, 2010 at 2:05pm.

Sin60

30 60 90 triangle has sides 1, sqrt3, 2 ( 1^2 + 3 = 2^2) therefore sin 30 = 1/2 = cos 60 sin 60 = sqrt3 / 2 = cos 30

More Related Questions