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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.​

User Barbie
by
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1 Answer

3 votes

Answer: √161

Step-by-step explanation:

15² - 8² = OB²

225 - 64 = OB²

161 = OB²

√161 = OB

User Adrian Carr
by
8.1k points
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