6.6.1 Angles and Tangents of Circles, PT3 Practice
Question 1:
![](http://pt3mathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/6/2018/03/Picture1.png)
Find the value of x and of y.
(b) In the diagram below, O is the centre of the circle. Find the value of
![](http://pt3mathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/6/2017/06/Picture2-251x300.png)
(i) x (ii) y
Solution:
(a)
(b)(i)
2x = 200o
x = 100o
(b)(ii)
x + y = 180o
100o + y = 180o
y = 80oQuestion 2:
![](http://pt3mathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/6/2017/06/Picture3-258x300.png)
Find the value of y.
![](http://pt3mathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/6/2017/06/Picture4.png)
Find the value of y.
Solution:
(a)
(b)
Question 3:
(a) In diagram below, ABCD is a circle. AEC and BED are straight lines.
![](http://pt3mathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/6/2017/06/Picture5-300x287.png)
Find the value of y.
(b) Diagram below shows a circle KLMN with centre O.
![](http://pt3mathematics.blog.onlinetuition.com.my/wp-content/uploads/sites/6/2017/06/Picture6-272x300.png)
Find the value of x.
Solution:
(a)
(b)
I love these examples. Thanks a lot for posting this.