I don’t know for sure but I think the answer is probably B.
Having a lot of credit cards isn’t usually a good thing because you eventually have to pay them off.
Sin(30°) =1/2 0.5
cos(30°) = (√3)/2
Note that the sin of an angle is equal to the cos of the complementary angle:
sin(60°) =cos(30°) = (√3)/2 since 30+60 = 90 (compl. angle)
