Question

With the usual notation, in ∠ABC, if ∠A + ∠B = 120°, a = √3 – 1, then the ratio ∠A : ∠B, is : (A) 7 : 1 (B) 5 : 3
(C) 9 : 7 (D) 3 : 1

Answer 1

the answer of this question is 5 : 3