Maria needs to memorize 1 sonnet, 1 limerick, and 1 haiku for an english class. her teacher gave the class a list of 8 sonnets, 7 limericks, and 5 haikus to choose from. how many different combinations of the three types of poems are there?

< 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⭐