$\"\"$

Find value of expession $\"\"$ .

If one angle is $\"\"$ , then the other angle is by subtracting $\"\"$ from $\"\"$ .

The other angle is $\"\"$ .

In a right angle triangle, the angles are $\"\"$ , $\"\"$ and $\"\"$ then the sides are $\"\"$ , $\"\"$ and $\"\"$ .

Draw diagram using above information.

$\"\"$

Trigonometric function : $\"\"$ .

$\"\"$

$\"\"$ .