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If α = 2π/7, then the value of tanα tan2α + tan2α tan4α + tan4α tanα is

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in Trigonometry by (51.2k points)

If α = 2π/7, then the value of tanα tan2α + tan2α tan4α + tan4α tanα is

(a) 0

(b) –7

(c) 13/4

(d) 2

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1 Answer

+1 vote
by (51.4k points)

Correct option is (b) –7

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