In triangle ABC, mAB = 2 and mAC = - 12. Then angle A is:

  1. 45^circ
  2. 60^circ
  3. 120^circ
  4. 90^circ
Answer

D) 90^circ

2 - 12 = -1, so AB perp AC. SLO M-09-B-12 · Knowledge

Mathematics MCQ · More Angle Between Lines MCQs · Practise