15. In the figure, OCTD is a sector of a circle which touches AB at T. Given that AB 20 cm and BO = 16 cm. (a) By joining OT, show that AOAT is similar to ABAO. (b) Hence, or otherwise, find the radius of the sector. AC

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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How to find the radius?
*15. In the figure, OCTD is a sector of a circle which touches
AB at T. Given that AB = 20 cm and BO 16 cm.
(a) By joining OT, show that AOAT is similar to ABAO.
(b) Hence, or otherwise, find the radius of the sector.
A C
Transcribed Image Text:*15. In the figure, OCTD is a sector of a circle which touches AB at T. Given that AB = 20 cm and BO 16 cm. (a) By joining OT, show that AOAT is similar to ABAO. (b) Hence, or otherwise, find the radius of the sector. A C
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