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anonymous
 one year ago
please helpp
Solve the equation tan 2x = 5 cot x, for 0< x < 180
anonymous
 one year ago
please helpp Solve the equation tan 2x = 5 cot x, for 0< x < 180

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.1I suggest you change this to an equation in tan x using the identities tan 2x = 2 tan x / (1  tan^2 x) and cot x = 1/ tan x

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1so we get 2 tan x = 5   1  tan^ x tan x

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1cross multiply 2 tan ^2 x = 5  5 tan^2 x now its easy

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1just add 5 tan^2 x to both sides then divide both sides by 7 to give a value for tan^2 x and take the square roots
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