SOLUTION: how do you find all possible solutiions of 3tanx * cosx = -5cosx?
Algebra.Com
Question 286247: how do you find all possible solutiions of 3tanx * cosx = -5cosx?
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
3tanx * cosx = -5cosx
3tanx * cosx + 5cosx = 0
cosx(3tanx + 5) = 0
cosx = 0 or 3tanx + 5 = 0
x = pi/2+2pi*n or x = -1.03037 + 2pi*n
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