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# Quick Trigonometry question

7y, 1m agoPosted 7 years, 1 month ago
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
7y, 1m agoPosted 7 years, 1 month ago
Options

(10)
#1
the second one when multiplied out is all squared so its cot^2 x^2 is it not?
#2
But as the x is apart of the cot, would it be individually squared or as a whole?

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
#3
Think they're the same - e.g sine squared x is the same as (sine x) squared.

So yes, think you're correct.
#4
I wouldve said individually sqaured. its been more than a year since ive had to think about this lol. and i dont think ive ever used cot. is it similar to cos?
#5
shosie
I wouldve said individually sqaured. its been more than a year since ive had to think about this lol. and i dont think ive ever used cot. is it similar to cos?

It's the cotangent: 1/tan

:)
#6
[FONT=arial]cot²(x)= csc²(x)-1[/FONT]
#7
wtf???
#8
[FONT=arial]cot²(x)= csc²(x)-1=(1/sin[/FONT][FONT=arial]² x)-1
[/FONT]
[FONT=arial]
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:
[/FONT]
#9
:s...that's way past my school time...wtf will you ever need it for anyways?Trigonomentry is a total BS
#10
Just asked a maths teacher and she said yes they are the same!!