engineering mathematics MCQ #534

The equation of the tangent to the circle x² + y² = 25 at (3, 4) is?

engineering mathematics MCQ #534

  1. Question 1

    Q1. The equation of the tangent to the circle x² + y² = 25 at (3, 4) is?

    • A) 3x + 4y = 25
    • B) 3x - 4y = 25
    • C) 4x + 3y = 25
    • D) 4x - 3y = 25

    Answer: 3x + 4y = 25

    Explanation: The tangent at (x1, y1) to x² + y² = r² is xx1 + yy1 = r². Here, it's 3x + 4y = 25.