1.

In a △ABC,if ∠A + ∠B = 150° and ∠B + ∠C = 75°, then ∠B =(a) 35°(b) 45°(c) 55°(d) 25°

Answer» In a △ABC,if ∠A + ∠B = 150° and ∠B + ∠C = 75°, then ∠B =

(a) 35°

(b) 45°

(c) 55°

(d) 25°


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