This is the basic and conceptual question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15
In this question we have been given the figure of circle and we have to find the value of x using the properties of the circle
ICSE Avichal publication
Understanding ICSE Mathematics
Question 1
Solution:
(i)
∠ADB and ∠ACB are in the same segment.
∠ADB = ∠ACB = 50°
Now in
∆ADB,
∠DAB + X + ∠ADB = 180°
= 42o + x + 50o = 180o
= 92o + x = 180o
x = 180o – 92o
x = 88o