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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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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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