engineering mathematics MCQ #388

The equation of the chord of contact of the tangents drawn from (x1, y1) to the circle x² + y² = a² is

engineering mathematics MCQ #388

  1. Question 1

    Q1. The equation of the chord of contact of the tangents drawn from (x1, y1) to the circle x² + y² = a² is

    • A) xx1 + yy1 = a²
    • B) xx1 + yy1 = a
    • C) xx1 - yy1 = a²
    • D) xx1 - yy1 = a

    Answer: xx1 + yy1 = a²

    Explanation: The equation of the chord of contact of the tangents drawn from (x1, y1) to the circle is xx1 + yy1 = a².