# Quick Trigonometry question

Am I right in thinking that cot^2 x is the same as (cot x)^2

On the first it is meant to read "cot squared x" although it looks a bit like 2x

Cheers

James

On the first it is meant to read "cot squared x" although it looks a bit like 2x

Cheers

James

Original Poster

THe question Im on is....

cot^2 x = 3

I have to solve it and solve it.

I was thinking it would go to

cot x = sqrt 3

So yes, think you're correct.

It's the cotangent: 1/tan

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sin²(x)= [1-cos(2x)]/2

[/FONT][FONT=arial]cot²(x)=(1 / [/FONT][FONT=arial][1-cos(2x)]/2) -1 = (2 / 1 - cos(2x)) - 1

cot[/FONT][FONT=arial]²(3)[/FONT][FONT=arial]= (2/1-cos(6))-1 = ... or something like that :giggle:

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