Thread: cot(x) + 3cot(2x) - 1 = 0

Hello this question looked straight forward enough, but I'm stuck and would really appreciate some help.

Solve on the interval



I tried writing it in terms of and

And got this;

, among various similar equations.

I have worked on from here a bit, but can't seem to get it in terms of a trigonometric equation I can then solve. I'd really appreciate it if somone would tell me if I'm on the right track and should keep going or if I need to approach the question in a different way.

Thank you very much.

Originally Posted by Furyan

Hello this question looked straight forward enough, but I'm stuck and would really appreciate some help.

Solve on the interval



I tried writing it in terms of and

And got this;

, among various similar equations.

I have worked on from here a bit, but can't seem to get it in terms of a trigonometric equation I can then solve. I'd really appreciate it if somone would tell me if I'm on the right track and should keep going or if I need to approach the question in a different way.

Thank you very much.

Hey Furyan!

How about writing it in terms of and ?

Hi ILikeSerena,

Thanks, I'll try that

Hi ILikeSerena

Thank you very much indeed, that worked! I would never have gone that way if you hadn't suggested it. Although in the end it was simple, it took me rather a long time to get there.

I got:



Then I used:



And ended up with:

Thank you very much indeed, that worked! I would never have gone that way if you hadn't suggested it.

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