Question

The polar of the point $\left( 5 , - \frac { 1 } { 2 } \right)$ with respect to circle $( x - 2 ) ^ { 2 } + y ^ { 2 } = 4$ is

• A. $5 x - 10 y + 2 = 0$
• B. $6 x - y - 20 = 0$
• C. $10 x - y - 10 = 0$
• D. $x - 10 y - 2 = 0$

Answer 1

Answer: (B)

$6 x - y - 20 = 0$

Answer 2

The polar of the point $\left( 5 , - \frac { 1 } { 2 } \right)$ is

$\Rightarrow 3 x - \frac { y } { 2 } - 10 = 0 \Rightarrow 6 x - y - 20 = 0$