engineering mathematics MCQ #481

The equation of the tangent to the circle x² + y² = a² at (acosθ, asinθ) is

engineering mathematics MCQ #481

  1. Question 1

    Q1. The equation of the tangent to the circle x² + y² = a² at (acosθ, asinθ) is

    • A) xcosθ + ysinθ = a
    • B) xcosθ - ysinθ = a
    • C) xsinθ + ycosθ = a
    • D) xsinθ - ycosθ = a

    Answer: xcosθ + ysinθ = a

    Explanation: The tangent to x² + y² = a² at (acosθ, asinθ) is xcosθ + ysinθ = a, derived using the point-slope form.