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The equation of a tangent to the parabola, x 2 = 8y, which makes an angle θ with the positive directions of x-axis, is :

1. x = y cot θ – 2 tan θ
2. y = x tan θ + 2 cot θ
3. x = y cot θ + 2 tan θ
4. y = x tan θ – 2 cot θ

Correct answer: x = y cot θ + 2 tan θ

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