1.

In a ∆ABC, if ∠A − ∠B = 42° and ∠B − ∠C = 21° then ∠B = ?(a) 32°(b) 63°(c) 53°(d) 95°Figure

Answer» In a ∆ABC, if ∠A − ∠B = 42° and ∠B − ∠C = 21° then ∠B = ?

(a) 32°

(b) 63°

(c) 53°

(d) 95°


Figure


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