How do you find the value of 35 * 10^-8
Describe how to find the answer and give the answer.

3.5 x 10^(-7)

Step-by-step explanation:

10^(-8) = 1/10^8 = 1/100000000

35 x 1/100000000 = 3.5 x 10^(-7)

rounding to the nearest thousandth would be 452,000

< 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⭐