given the two histograms a & b below, which of the following statements are true? both sets have same mean, range, & standard devaiton

i used to know how to do this in 7th but i forget easily

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⭐

4th option is correct xy=-10

if this was to u plzz mark me the brainliest