One of the most important and exam oriented question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15
In this question a secant PAB and a
tangent PT to a circle are given
Also it is given that (i) PT = 8 cm and PA = 5 cm,
Now we have to find the length of AB
(ii) PA = 4.5 cm and AB = 13.5 cm,
Now we have to find the length of PT.
ICSE Avichal publication
Understanding ICSE Mathematics
Question 31
Solution:
![ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.3 Q30.4](https://www.learninsta.com/wp-content/uploads/2018/08/ML-Aggarwal-Class-10-Solutions-for-ICSE-Maths-Chapter-15-Circles-Ex-15.3-Q30.4.png)
![ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 15 Circles Ex 15.3 Q30.5](https://www.learninsta.com/wp-content/uploads/2018/08/ML-Aggarwal-Class-10-Solutions-for-ICSE-Maths-Chapter-15-Circles-Ex-15.3-Q30.5.png)
∵ PT is the tangent and PAB is the secant of the circle.