$\"\"$

Redraw the given figure :

$\"\"$

Since the triangle $\"\"$ ia a right triangle, use the Pythagorean theorem to find angle at $\"\"$ .

Pythagorean theorem : $\"\"$ .

In $\"\"$ , $\"\"$ .

$\"\"$

Any of trigonometric ratios are used to find the angle at $\"\"$ .

$\"\"$ ,

$\"\"$ .

The only choice H has a correct ratio given.

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Option H is the correct choice.