$\"\"$

The condition is $\"\"$ .

Substitute the given information into the polar distance formula

$\"\"$ .

Where $\"\"$ .

Missing coordinate is $\"\"$ .

$\"\"$

Squaring on both sides.

$\"\"$

Use the quadratic formula to find the value of $\"\"$ .

The equation $\"\"$ is in the form of $\"\"$ .

The quadratic equation formula is $\"\"$ .

Where $\"\"$ .

Substiute the values in the formula $\"\"$ .

$\"\"$

Therefore, the values of $\"\"$ is $\"\"$ and $\"\"$ .

$\"\"$

The values of $\"\"$ is $\"\"$ and $\"\"$ .