14. Joey is running an experiment with a mass on a spring. Joey models the lieight of the mass above the table he is working on using the equation h(t) = 6.85 cos(3.421)+9, where the height is in inchies and the time, 1, is in seconds since he let the mass free. How many seconds, to the nearest tenth, will it take for the mass to return to its original position?​

4

step-by-step explanation:

ok

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⭐

it would be 6xy and -16xy.