$\"\"$

The given triangle is opposite 3, adjacent 4 and hypotenuse 5.

$\"\"$

$\"\"$ (Substitute opp, 3 and hyp, 5)

$\"\"$

$\"\"$ (Substitute adj, 4 and hyp, 5)

$\"\"$

$\"\"$ (Substitute opp, 3 and adj, 4) $\"\"$

The three trigonometric ratios or angles are $\"\"$ , $\"\"$ and $\"\"$ . \ \