engineering mathematics MCQ #494

The equation of the tangent to the circle x² + y² = a² at (a cosθ, a sinθ) is

engineering mathematics MCQ #494

  1. Question 1

    Q1. The equation of the tangent to the circle x² + y² = a² at (a cosθ, a sinθ) is

    • A) x cosθ + y sinθ = a
    • B) x cosθ - y sinθ = a
    • C) x sinθ + y cosθ = a
    • D) x sinθ - y cosθ = a

    Answer: x cosθ + y sinθ = a

    Explanation: The tangent equation is x cosθ + y sinθ = a, derived using the point (a cosθ, a sinθ) and slope.