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Scorpion4ik [409]
3 years ago
8

Cos(2x) - 3cos(x) + 2= 0 ??

Mathematics
1 answer:
alexandr1967 [171]3 years ago
3 0
Ignore above
your equation is 2(cosx)^2-3cosx+1=0
use quadratic formula to get results
you will end up with
cosx=1 or cosx=1/2
so, x=0 or x=pi/3

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