Circles - Exercise 10.2 (Que. 5 to 9) | Class 10 Maths Chapter 10 | CBSE 2024-25

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✅ In this video,

✔️ Class: 10th
✔️ Subject: Maths
✔️ Chapter: Circles (Chapter 10)
✔️ Topic Name: Exercise 10.2 (Que. 5 to 9)
✔️ Topics Covered In This Video (By Kishore Sir): In this engaging video, our expert instructor introduces you to the fundamental concepts of Circles in Class 10 Maths with 'Exercise 10.2 (Que. 5 to 9)' of Chapter 10 - "Circles." This session simplifies the key ideas, including definitions, properties, and theorems related to circles, making it easier for students to build a solid foundation. Whether you're preparing for exams or revising for better clarity, this video breaks down the concepts into easy-to-understand explanations, ensuring a smooth learning experience. Perfect for Class 10 students, this tutorial will help you grasp the fundamentals of circles and excel in your studies. Don’t miss this opportunity to enhance your understanding and confidence in Maths!
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00:00 Circles - Exercise 10.2 (Que. 5 to 9)
01:29 Que. 5 Prove that the perpendicular at the point of contact to the tangent to a circle passes through the centre.
14:57 Que. 6 The length of a tangent from a point A at distance 5 cm from the centre of the circle is 4 cm. Find the radius of the circle.
22:00 Que. 7 Two concentric circles are of radii 5 cm and 3 cm. Find the length of the chord of the larger circle which touches the smaller circle.
37:39 Que. 8 A quadrilateral ABCD is drawn to circumscribe a circle (see Fig). Prove that
48:39 Que. 9 In Fig, XY and XY are two parallel tangents to a circle with centre O and another tangent AB with point of contact C intersecting XY at A and XY at B. Prove that
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[Gilluhehe]

√4
let's assume that √4 is irrational number = √4 is cannot express in a/b form but we know that √4=2=2/1
which is form of a/b so, our contractions is worge hence it's proof √4 is rational number