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tan A+tan(60^(@)+A)+tan(120^(@)+A)=3tan3...

tan A+tan(60^(@)+A)+tan(120^(@)+A)=3tan3A

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Prove that: tan A+tan(60^(@)+A)-tan(60^(@)-A)=3tan3A

Prove that: tanA + tan(60^(@)+A) + tan(120^(@)+A)=3tan3A

Prove that: tanA + tan(60^(@)+A) + tan(120^(@)+A)=3tan3A

tan(20^@) gt tan(120^(@))

Prove the following: tanA+tan(60^@+A)+tan(120^@+A)=3tan3A

Prove that tanA+tan(60^@+A)-tan(60^@-A)=3tan3A

Prove that tan A. (tan 60^(@) +A). Tan (60^(@)-A)=tan 3A and hence find the value of tan 6^(@) tan 42^(@) tan 66^(@) tan 78^(@) .

Prove that : tan A+tan (60^@+A)-tan (60^@-A)=3 tan 3A .

Prove that : t a n A+tan(60^0+A)+tan(120^0+A)=3t a n3A