Mathematics, 30.07.2019 22:30 mayyyaaa

Prove: tan(x-y)+tan(y-z)+tan(z-x)=tan(x-y) tan(y-z)tan(z-x) i need very good explanations because i can't do or understand this

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Prove: tan(x-y)+tan(y-z)+tan(z-x)=tan(x-y) tan(y-z)tan(z-x) i need very good explanations because i...