Question

answer send fast with explanation​

Answer 1

Answer:

/_BAC=77°

Step-by-step explanation:

PQ||RS

/_PAB=/_ABC=50°

By linear sum property

/_SCA+/_ACB=180°

127+/_ACB=180°

/_ACB=180-127

/_ACB=53°

In ∆ABC

/_BAC+/_ABC+/_ACB=180°

/_BAC+50°+53°=180°

/_BAC=180°-103°

/_BAC=77°