Simplify the expression. |-5| - |4|

1

Step-by-step explanation:

Absolute value means take the positive value of whats inside

|-5| - |4|

5 - 4

1

All you can get from I-5I - I4I is just a plain 1.

< 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⭐