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In the given figure if o is the centre of the circle ,then find x?
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In the given figure if o is the centre of the circle ,then find x?
Understanding the Problem
To solve for x in the given figure, we need to consider the properties of circles and angles. The circle is defined with center O, and we need to analyze the angles formed at various points.
Key Concepts
- Circle Properties: In a circle, the angle subtended by an arc at the center is twice that subtended at any point on the remaining part of the circle.
- Central Angle: The angle formed at the center of the circle (O) is known as the central angle.
- Inscribed Angle: The angle formed at the circumference of the circle (let's say A) is known as the inscribed angle.
Steps to Find x
- Identify Angles: Determine the given angles in the figure. For example, if angle AOB is the central angle, and angle ACB is the inscribed angle.
- Apply the Circle Theorem: Use the theorem that states the inscribed angle is half the central angle. Therefore, if angle AOB = 2x, then angle ACB = x.
- Set Up the Equation: If additional angles are provided in the problem, set up an equation based on the relationship between the angles.
Example Calculation
- Suppose angle AOB (central angle) is provided as 80 degrees.
- According to the theorem: angle ACB = 1/2 * angle AOB
- Therefore, x = 1/2 * 80 = 40 degrees.
Conclusion
By following these steps and understanding the relationships between the angles in the circle, you can confidently find the value of x. Always remember to apply the circle theorems effectively for accurate results.
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In the given figure if o is the centre of the circle ,then find x?
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