Question

In the given fig. DE || BC, LADE =70° and L BAC=50°, then angle
LBCA​

Answer 1

Answer:

ade=abc=70 degree( corresponding angles)

bac=50 degree

abc+bac+bca=180. angle sum property

70+50+bca=180

120+bca=180

angle bca=180-120=60