A 17-foot ladder is leaning against a building. The base of the ladder is 8 feet from the base of the building. The side of the building and the ground form
a right angle as shown.

Enter the distance between the ground and the top of the ladder, x, in feet.

Pythagorean theorem:

x^2 = 17^2 - 8^2

x^2 = 225

x = sqrt(225) = 15

The distance is 15 ft

< 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⭐

a

step-by-step explanation: