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tan A + 2 tan 2A + 4 tan 4A + 8 cot 8A = ...........

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tan A + 2 tan 2A + 4 tan 4A + 8 cot 8A = ................ 

(A)  cot A 

(B)  tan 6A 

(C)  cot 4A 

(D)  None of these

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1 Answer

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Best answer

Correct option (A)  cot A

tanA + 2 tan2A + 4 tan4A + 8 cot8A

tanA + 2 tan2A + 4 tan4A + 8 1 - tan24A/2 tan4 A

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