1.

Prove that following identities: tan θ tan (θ+60∘)+tan θ tan(θ−60∘)+tan(θ+60∘) tan(θ−60∘)=−3

Answer»

Prove that following identities:

tan θ tan (θ+60)+tan θ tan(θ60)+tan(θ+60) tan(θ60)=3



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