selenarose56751 selenarose56751

04-01-2018
Mathematics

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How to find cot of 60 given sin and tan of 30?

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Аноним Аноним

04-01-2018

use tan 2x = 2tan x / (1 - tan^2x)

so tan 60 = 2 tan 30 / 1 - tan^2 30 = 1.7321

cot 60 = 1 / 1.7321 = 0.5774 Answer

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