NCERT Exemplar Solutions
Class 10 - Mathematics - CHAPTER 9: Circles - Exercise 9.2
Question 4

Question. 4

The angle between two tangents to a circle may be \(0^\circ\). State True/False and justify.

Answer:

False.

Detailed Answer with Explanation:

Step 1: A tangent is a line that just touches the circle at one point, without cutting it.

Step 2: If we take any point outside the circle, we can draw exactly two tangents from that point to the circle.

Step 3: These two tangents will meet at the external point and form an angle \(\theta\).

Step 4: This angle is always between \(0^\circ\) and \(180^\circ\).

Step 5: Why not \(0^\circ\)? Because if the angle were \(0^\circ\), both tangents would overlap each other, which means they would become one single line. But then it will no longer be "two tangents".

Step 6: Therefore, the angle can be very small if the point is taken very far away, but it can never be exactly \(0^\circ\).

Final Conclusion: The statement is False.

NCERT Exemplar Solutions Class 10 – Mathematics – CHAPTER 9: Circles – Exercise 9.2 | Detailed Answers