Determine k so that the given equation will have the stated property and write the resulting equation 4x² - 8kx - 9=0 has one root the negative of the other

k=0

Step-by-step explanation:

Let one root = a,

other root= -a  as they are negatives of each other. sum of two roots= a-a=0

sum = = 0 .

So k = 0.

product of roots = 9/4.

< 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’s supposed to be -4+45=41

step-by-step explanation: