-5cos105°+5cos165° =??
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In probability 2 events are independent if the occurrence of 1 event does not affect the occurrence of the other event. Mathematically, if event A and event B are independent, then . For our two events in this problem we have that
and
. If these two events are independent, then we should have that,
.A and B are independent events if the probability of A and B is 0.1