$\"\"$

The length of hypotenuse of a right triangle is $\"\"$ .

Assume that length of adjacent side as $\"\"$ .

Consider the angles as $\"\"$ and $\"\"$ .

Trigonometric function : $\"\"$ .

$\"\"$

$\"A$ .

Substitute $\"\"$ in $\"A$ .

$\"\"$

The angles are $\"\"$ and $\"\"$ .

$\"\"$

The angles are $\"\"$ and $\"\"$ .