The value of $\"\"$ is $\"\"$ .

Find the reference number $\"\"$ .

The reference number $\"\"$ associated with $\"\"$ is the shortest distance along the unit circle between the terminal points determined by $\"\"$ and $\"\"$ -axis.

$\"\"$ $\"\"$

$\"\"$

Reference number is $\"\"$

Find the terminal number.

The point $\"image\"$ obtained by moving along the unit circle in either clockwise or anti clockwise direction is the terminal distance.

The reference number is $\"image\"$ , the terminal point is $\"\"$ .

Since $\"image\"$ lies in first quadrant, both $\"\"$

Terminal point is $\"\"$ .