In a ΔABC, the sides AB and AC are extended to P and Q, respectively, the bisects of ∠PBC and ∠QCB intersect at a point R, If ∠R = 70°, then the measure of ∠A is?
Answer & explanation
Correct answer: option 2
∠R = 90° - \(\frac{∠A}{2}\)
70° = 90° - \(\frac{∠A}{2}\)
∠A = 40°