Question
Find the values of tan 840°.
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{(1, 0), (3, 3), (2, -1), (4, 1), (2, 2)}
| Elementary events: | $W_1$ | $W_2$ | $W_3$ | $W_4$ | $W_5$ | $W_6$ | $W_7$ |
| $0.1$ | $0.01$ | $0.05$ | $0.03$ | $0.01$ | $0.2$ | $0.6$ |