## Question

### Solution

Correct option is

3

Equations of the pair of tangents is

(y2 – 4x)(16 – 4) = [4y – 2(x + 1)]2 12(y2 – 4x) = 4(2y – x – 1)2 3(y2 – 4x) = 4y2 + x2 + 1 – 4xy + 2x – 4y x2 + y2 – 4xy + 14x – 4y + 1 = 0

If is the angle between these lines

Then  .

#### SIMILAR QUESTIONS

Q1

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Q2

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Q3

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Q4

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Q5

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Q6

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Q7

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Q8

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Q9

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