$\"\"$

(a)

The angle is $\"\"$ .

$\"\"$ to $\"\"$ is quadrant I.

$\"\"$ to $\"\"$ is quadrant II.

$\"\"$ to $\"\"$ is quadrant III.

$\"\"$ to $\"\"$ is quadrant IV.

$\"\"$

The angle is $\"\"$ .

Just compare the fraction with the $\"\"$ to the fractions.

The angle $\"\"$ , where $\"\"$ is between 0 and $\"\"$ .

So it is in quadrant I.

$\"\"$

(b)

The angle is $\"\"$ .

Just compare the fraction with the $\"\"$ to the fractions.

The angle $\"\"$ , where $\"\"$ is between 1 and $\"\"$ .

So it is in quadrant III.

$\"\"$

(a) The angle $\"\"$ is in quadrant I.

(b) The angle $\"\"$ is in quadrant III.