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

In aΔABC,if∠A−∠B=42∘ and ∠B−∠C=21∘then ∠B=?(a)32∘

1.	In aΔABC,if∠A−∠B=42∘ and ∠B−∠C=21∘then ∠B=?(a)32∘ (b)63∘ (c)53∘ (d)95∘
Answer» $I n a Δ A B C, i f ∠ A - ∠ B = 42^{\circ} a n d ∠ B - ∠ C = 21^{\circ} t h e n ∠ B = ? (a) 32^{\circ} (b) 63^{\circ} (c) 53^{\circ} (d) 95^{\circ}$