Question 4In ΔABC, if BC =AB and ∠B=80∘ then ∠A is equal to(A) 80∘(B) 40∘(C) 50∘(D) 100∘

Question 4In ΔABC, if BC =AB and ∠B=80∘ then ∠A is equal to(A)

1.	Question 4In ΔABC, if BC =AB and ∠B=80∘ then ∠A is equal to(A) 80∘(B) 40∘(C) 50∘(D) 100∘
Answer» Question 4 In $Δ A B C$ , if BC =AB and $∠ B = 80^{\circ}$ then $∠ A$ is equal to (A) $80^{\circ}$ (B) $40^{\circ}$ (C) $50^{\circ}$ (D) $100^{\circ}$