What is the relationship between the angles formed by two tangents drawn from a

Practice Questions

Q1
What is the relationship between the angles formed by two tangents drawn from a point outside the circle?
  1. They are equal
  2. They are supplementary
  3. They are complementary
  4. They are congruent

Questions & Step-by-Step Solutions

What is the relationship between the angles formed by two tangents drawn from a point outside the circle?
  • Step 1: Understand what a tangent is. A tangent is a line that touches a circle at exactly one point.
  • Step 2: Identify the point outside the circle from which the tangents are drawn. Let's call this point P.
  • Step 3: Draw two tangents from point P to the circle. Let's call the points where the tangents touch the circle A and B.
  • Step 4: Notice that the two tangents PA and PB are equal in length. This is a property of tangents from a common external point.
  • Step 5: Now, look at the angles formed at point P. These angles are ∠APB (the angle between the two tangents).
  • Step 6: The angles formed by the tangents with the line connecting point P to the center of the circle are equal. This means that ∠PAB = ∠PBA.
  • Step 7: Since the two angles ∠PAB and ∠PBA are equal, we conclude that the angle ∠APB is formed by two equal tangents.
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