Mathematics, 12.01.2020 00:31 wasscrackin
If cosa= -4/5 and a is in the second quadrent, then cos2a= ?
Answers: 1
Mathematics, 21.06.2019 15:40, xxaurorabluexx
What is the distance between the points 4,10 and -3,-14 on the coordinate plane
Answers: 2
If cosa= -4/5 and a is in the second quadrent, then cos2a= ?...
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