A right triangle’s hypotenuse is 20 cm long. What is the length of the side opposite a 60° angle? Give your answer to the nearest tenth of a centimeter.
40
18.5
20
17.3
17.3 cm
Using the sine function, sin(60°) = opposite / hypotenuse
opposite = hypotenuse * sin(60°)
opposite = 20 * sin(60°)
opposite ≈ 17.3 cm
Therefore, the length of the side opposite the 60° angle is approximately 17.3 cm.