I can only solve no.2
Step-by-step explanation:
CAB=ABC(ISCOSCELES TRIANGLE)
SO REPRESENT THEM BY X BECAUSE YOU DON'T KNOW THEM
THEIR SUM =180
SO,CAB+ABC+ACB=180
SUBSTITUTE THEIR VALUES
X+X+120=180
2X+120=180
2X=180-120
2X=60
[tex] \frac{2x}{2x} = \frac{60}{2 } [/tex]
cancel
so x is 30 degrees
Trust me
