The polar point is $\"\"$ .

The polar coordinate can be written as $\"\"$ or $\"\"$ , where n is any integer.

The polar coordinates point : $\"\"$ .

The value of $\"\"$ is positive, the polar coordinate can be written as $\"\"$ , where n is any integer.

The value of $\"\"$ is negative, the polar coordinate can be written as $\"\"$ , where n is any integer.

The all polar coordinates of point P are $\"\"$ and $\"\"$ .