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PhamCy

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**Summary:**https://www.physicsforums.com/threads/trigonometry-question.977263/

Here's the question.

**Find the solutions of the equation tan(x)=2cos(x)+1 if 0 ≤ x ≤ 2π.**

I know this question can be solved by observing the graph but is there any other ways (like algorithms OR some Trigonometry rules) to solve this, I couldn't figure that out.

Thank you for those who noticed my question.

**[Moderator's note: Moved from a technical forum and thus no template.]**

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