# calculus

3cotx - radical 3 = 0
solve for x

please show it step by step

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3. 👁 84
1. 3cotx - √3 = 0
3cotx = = √3
cotx = 1/√3

Now it's time to review the "standard" angles whose trig functions are easy to remember. One of these is 60°, where

cot60° = 1/√3

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posted by Steve
2. in the second step , don’t you divide by 3 on both sides ?

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posted by tom
3. yes. since 3=√3*√3, √3/3 √3/(√3*√3) = 1/√3

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posted by Steve
4. wait i’m lost
so you get radial 3 / 3
Then what ?

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posted by tom
5. ohh i see it
cot x = radical 3 / 3

so the tan x = 3 / radical 3
— which is radical 3 when rationalized

so x= pi/3? and 4pi/3?

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posted by tom
6. correct

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posted by Steve

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