Step 1 :

(a)

The condition for the point in the polar coordinate is .

The point in polar co-ordinates is .

In the polar coordinates we can represent the point in multiple representations of a point.

The point can also be represented as .

Subtract from the angle.

(b)

The condition for the point in the polar coordinate is .

The point in polar co-ordinates is .

In the polar coordinates we can represent the point in multiple representations of a point.

The point can also be represented as .

Add half revolution ( radians ) to the angle and replace by .

(c)

The condition for the point in the polar coordinate is .

The point in polar co-ordinates is .

In the polar coordinates we can represent the point in multiple representations of a point.

The point can also be represented as .

Add one revolution ( radians ) to the angle .