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Statement-1: y+b=m(1) (x+a) and y+b=m(2)...

Statement-1: `y+b=m_(1) (x+a)` and `y+b=m_(2)(x+a)` are perpendicular tangents to the parabola `y^(2)=4ax`.
Statement-2: The locus of the point of intersection of perpendicular tangents to a parabola is its directrix.

A

Statement-1 is True, Statement - 2 is true, Statement-2 is a correct explanation for Statement-1`

B

Statement-1 is True, Statement - 2 is true, Statement-2 is not a correct explanation for Statement-6

C

Statement-1 is True, Statement - 2 is False.

D

Statement-1 is True, Statement - 2 is True.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given question, we will analyze both statements regarding the parabola \( y^2 = 4ax \). ### Step 1: Understand the equations of the tangents The equations of the tangents are given as: 1. \( y + b = m_1 (x + a) \) 2. \( y + b = m_2 (x + a) \) These lines represent tangents to the parabola \( y^2 = 4ax \). ### Step 2: Find the point of intersection Both tangents pass through the same point, which can be found by setting the two equations equal to each other: \[ m_1 (x + a) + b = m_2 (x + a) + b \] This simplifies to: \[ m_1 (x + a) = m_2 (x + a) \] Assuming \( m_1 \neq m_2 \), we can conclude that both tangents intersect at the point: \[ P(-a, -b) \] ### Step 3: Determine the coordinates of the point of intersection The coordinates of the intersection point \( P \) are: \[ P(-a, -b) \] This means that the x-coordinate of the point of intersection is \( -a \). ### Step 4: Identify the directrix of the parabola For the parabola \( y^2 = 4ax \), the directrix is given by the equation: \[ x = -a \] This indicates that the x-coordinate of the point of intersection \( P \) lies on the directrix. ### Step 5: Conclusion about the statements - **Statement 1**: The tangents are perpendicular and intersect at the point \( P(-a, -b) \), which lies on the directrix \( x = -a \). Therefore, Statement 1 is true. - **Statement 2**: The locus of the point of intersection of perpendicular tangents to a parabola is indeed its directrix. Thus, Statement 2 is also true. ### Final Answer Both statements are true, and Statement 2 provides the reason for Statement 1. ---

To solve the given question, we will analyze both statements regarding the parabola \( y^2 = 4ax \). ### Step 1: Understand the equations of the tangents The equations of the tangents are given as: 1. \( y + b = m_1 (x + a) \) 2. \( y + b = m_2 (x + a) \) These lines represent tangents to the parabola \( y^2 = 4ax \). ...
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