Calculate each numbered angle measure.

#1 is 90 degrees, #2 is 40 degrees, #3 is 110 degrees, #4 is 130 degrees, Numbers 5 and 6 are 60 degrees, #7 is 130 degrees, and #8 is 130 degrees

Step-by-step explanation:

Hope this helps :D.

1-8 is 90, 68, 112, 112, 68, 56, 124, 124

Step-by-step explanation:

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐