engineering mathematics MCQ #510

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

engineering mathematics MCQ #510

  1. Question 1

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

    • A) 3x + 4y = 25
    • B) 3x - 4y = 25
    • C) 4x + 3y = 25
    • D) 3x + 4y = 5

    Answer: 3x + 4y = 25

    Explanation: Tangent at (x1,y1) is xx1 + yy1 = r² → 3x +4y =25.