Trig identies help!

[ben7292]

Hi guys, i've uploaded a picture of the question...hopefully you can see it!
im stuck on where to rearrange the formula into a polynomial, if thats the correct way to do it...any help would be much appreciated

Ben

[attachment=0:3ve24rgj]trig question.PNG[/attachment:3ve24rgj]

 

[Deleted member 4993]

Hi guys, i've uploaded a picture of the question...hopefully you can see it!
im stuck on where to rearrange the formula into a polynomial, if thats the correct way to do it...any help would be much appreciated

Ben

[attachment=0:21y61bgi]trig question.PNG[/attachment:21y61bgi]

where to rearrange the formula into a polynomial, <<< I don't follow what you mean.

The insruction was pretty clear....

\(\displaystyle Express \ \tan(2\alpha) \ \ in \ \ terms \ \ of \ \tan(\alpha) \ \ and \ \ hence .....\)

did you do that first?

 

[galactus]

\(\displaystyle tan(2a)=\frac{2tan(a)}{1-tan^{2}(a)}\)

That identity should help.