the value of x in the figure is
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0
Answer:
a)30
Step-by-step explanation:
good question....
Answered by
1
Step-by-step explanation:
Given:
- ACBD is a circle with centre O
- Angle COB = 110°
To find:
- Angle ADC = x°
Solution:
Property 1: Angle in a semicircle = 90°
AB is the diameter of circle ACBD with centre O
=> Angle ADB = 90°
Property 2: Angle made by two points(on the circle) at centre is twice the angle made at circumference
=> Angle COB = 2* Angle CDB
=> 110 = 2* Angle CDB
=> Angle CDB = 55°
BUT,
Angle ADB = Angle ADC + Angle CDB
=> 90° = x + 55°
=> x = 90 - 55
=> x = 35
Therefore, x = 35°
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