MATH SOLVE

3 months ago

Q:
# I need help with this ;-; can someone help me how to get the answer as well?

Accepted Solution

A:

Answer:(3)γγγ60Β°Step-by-step explanation:Since the exterior angle of a triangle isequal to the sum of non-adjacent interior angles, we have <DAB=<ABC +<BCAγ180-3x =(6x-40) + (x+20)γ180-31 - 3t sx-not x+20γ180-3x - 72-20γ7x+3x= 180+20γ10x=200γx=20Β°(Being complementory angles)<DAB+ <BAC = 180Β°γ180-3Γ20Β°+<BAC=180γ<BAC=60Β°