Question

QUESTION:↓

O is the centre of a circle of radius 8 cm. The tangent at a point A on the circle cuts a line through O at B such that AB = 15 cm. Find OB.​

Answer 1

Answer: √161

Step-by-step explanation:

15² - 8² = OB²

225 - 64 = OB²

161 = OB²

√161 = OB