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ddcon4r 2022-07-04 Answered
Find 1 tan 3 x tan x 1 cot 3 x cot x
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Answers (1)

razdiralem
Answered 2022-07-05 Author has 15 answers
If tan 3 x = a , tan x = b
1 tan 3 x tan x 1 cot 3 x cot x = 1 a b 1 1 a 1 b = 1 + a b a b
Now tan ( A B ) = tan A tan B 1 + tan A tan B

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