GCSE Maths Practice: trigonometry

\( \begin{array}{l}\text{Which of the following are correct exact values?}\end{array} \)

Select all correct options:

\( \sin 45^\circ = \frac{1}{\sqrt{2}} \) \( \cos 60^\circ = \frac{1}{2} \) \( \tan 45^\circ = 1 \) \( \sin 60^\circ = \frac{1}{2} \)