In ΔABC if AB = BC and ∠B=60∘ then ∠C__
In ΔABC, BC = AB and ∠B = 80°, then ∠A is equal to:
In a ΔABC, if AB=AC and BC is produced
to D such that ∠ACD=100∘, then ∠A=
In ΔABC, BC = AB and ∠B=80∘. Then, ∠A=?(a) 50∘ (b) 40∘ (c) 100∘ (d) 80∘