tanx + tan 4x + tan 7x = tanxtan4xtan7x
solve for x with detailed explainations
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Now consider a + b + c = nπ
then tan(a + b + c) = 0
So, tan(a) + tan(b) + tan(c) - tan(a)tan(b)tan(c) = 0
-> tan(a) + tan(b) + tan(c) = tan(a)tan(b)tan(c)
Therefore, x + 4x + 7x = nπ
-> 12x = nπ
-> x =
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