Can anyone help me solve the following question. ABC is any triangle. XAB, YBC and ZAC are equilateral triangles formed on this triangle. Prove that AY, BZ and CX are concurrent.(adsbygoogle = window.adsbygoogle || []).push({});

In a triangle ABC, the Euler line is parallel to side BC. Prove that tanB*tanC = 3.

I just need a hint. I don't know how to start with the second problem?

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# Homework Help: Hint needed

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