Question

prove ac=db

prove that ac=db
​

Answer 1

Answer:

angle AOC=DOB _(1) (Vertically opposite angles)

ACO=BDO=70 _(2)(GIVEN)

By angle addition property in triangle AOC

70+30+OAC=180

Angle OAC=80

Similarly in triangle DOB

Angle DBO=80

Thus OAC=DBO_(3)

Thus from 1 , 2 and 3

by AAA test

triangle AOC=triangle DOB

Thus

AC=DB