What is the exact value of sin 60°? Enter your answer as a fraction in simplest form by filling in the boxes.

To find the exact value of sin 60°, we can use the special right triangle with angles 30°-60°-90°.

In a 30°-60°-90° triangle, the side lengths are in the ratio 1 : \sqrt{3} : 2.

Therefore, in a triangle with a 60° angle, the side opposite the 60° angle is \sqrt{3} times the side opposite the 30° angle.

Since sin is opposite over hypotenuse, we have:

\sin 60° = \frac{\text{opposite}}{\text{hypotenuse}} = \frac{\sqrt{3}}{2}

Therefore, the exact value of sin 60° is \boxed{\frac{\sqrt{3}}{2}}.